diff --git a/slides/branches.md b/slides/branches.md
index bbfddb58455f71c5bb2044d8f6ce52b772aaf6ad..c80f1ed3258aef12d42147347b251ef2a7b6b1b2 100644
--- a/slides/branches.md
+++ b/slides/branches.md
@@ -16,7 +16,7 @@ A **version** of the code is referred to as a **branch**.
 
 <div class="fragment">
 <br><br>
-(Live Demo)
+<img src="img/icon-live-demo.png" height="100px">
 
 
 <br>
@@ -64,7 +64,9 @@ You can switch to the `develop` branch with
 $ git checkout develop
 ```
 
-(Live Demo)
+<div class="fragment">
+<br>
+<img src="img/icon-live-demo.png" height="100px">
 
 
 ## Create your own version
@@ -90,5 +92,7 @@ Push your version to your fork:
 $ git push origin add-2-numbers
 ```
 
-<br><br>
-(Live Demo)
+<br>
+<div class="fragment">
+<br>
+<img src="img/icon-live-demo.png" height="100px">
diff --git a/slides/configuration.md b/slides/configuration.md
index 0802b341a1f3935cf0b104af69c46e7e122a900f..842420df18b5d93f6ecaecedd133d82fbe84fb7d 100644
--- a/slides/configuration.md
+++ b/slides/configuration.md
@@ -17,17 +17,18 @@ $ git config --list
 <br>
 This should list the configuration with `user.name` and `user.email`.
 
+<br>
+Exit by typing `q`.
+
 
 ## What is an SSH key?
 
 An SSH key is a secure access credential.
 
-
-## Why do I need an SSH key?
-
+<div class="fragment">
 <br>
-**Idea**: <br><br>
-communicate **securely** with Github/Gitlab **without** entering the username/password.
+**Principle**: <br><br>
+Communicate **securely** with Github/Gitlab **without** entering the username/password.
 
 
 ## How do I get and set my SSH key?
@@ -39,15 +40,17 @@ Check if you already have an SSH key:
 $ ls -al ~/.ssh
 ```
 <br>
-If there is a file with an extension `.pub`, you already have an SSH key.
+If there are 2 files named `id_rsa`, you have an SSH key.
 
 <div class="fragment">
 <br><br>
 If you don’t have yet an SSH key, you have to generate one:
 ```bash
-$ ssh-keygen -t rsa
+$ ssh-keygen -t rsa -b 4096
 ```
 
 <br>
-Then, add the SSH key to Github/Gitlab (see demo).
+Then, add the SSH key to Github/Gitlab.
 
+<div class="fragment">
+<img src="img/icon-live-demo.png" height="100px">
\ No newline at end of file
diff --git a/slides/essential_commands.md b/slides/essential_commands.md
index 8da014a860cffd4222990bd3eb3bc1ac2f95328b..4f7c47d59e963601c102ad7c417527f4549139d5 100644
--- a/slides/essential_commands.md
+++ b/slides/essential_commands.md
@@ -17,9 +17,9 @@ $ git push <remote> <branch>
 ```
 
 
-## Pull the latest version of an existing repository
+## Pull the latest version of an existing branch
 
-Then, pull the latest revision:
+Pull the latest revision on branch `add-2-numbers`:
 ```bash
 $ git pull origin add-2-numbers
 # Already up to date
@@ -46,7 +46,7 @@ $ mv addTwoNumbers.m addTwoNumbers_myName.m
 Open the file using the `Visual Studio Code` editor (or any other editor)
 and correct the line
 ```Matlab
-c = a + b;
+c = a - b;
 ```
 
 
@@ -62,7 +62,8 @@ $ git status
 <br>
 Now, add the file (bring it on stage)
 ```bash
-$ git add firstCommit/addTwoNumbers_myName.m
+$ git add addTwoNumbers_myName.m
+$ git status
 # returns the same as before, generally in green (means staged)
 ```
 
@@ -78,21 +79,15 @@ exit with `q`
 ## Add a commit message
 
 ```bash
-$ git commit -m "Uncommented line for adding 2 numbers"
+$ git commit -m "Correcting formula for adding 2 numbers"
 $ git status
 ```
 
-<br>
-You can pull, even at this stage, new possible changes
-```bash
-$ git pull
-```
-
 
-## Push your file to the repository
+## Push your file to your fork
 
 ```bash
-$ git push
+$ git push origin add-2-numbers
 ```
 
 <div class="fragment">
@@ -106,19 +101,21 @@ exit by typing `q`
 
 ## Do it yourself
 
-* Modify and rename `secondCommit/multiplyTwoNumbers.m`
+* Modify and rename `secondCommit/multiplyTwoNumbers_myName.m`
 * Push the file `secondCommit/multiplyTwoNumbers_myName.m`
-* Don't forget to add <font color="red">`_myName`</font>
+* Don't forget to edit <font color="red">`_myName`</font>
 
 <div class="fragment">
 <br>
 Commands:
 ```bash
-$ git pull
-$ git diff # optional
+$ git checkout develop
+$ git pull origin develop
+$ git checkout -b multiply-2-numbers
+# make changes to file
 $ git add secondCommit/multiplyTwoNumbers_myName.m
-$ git commit -m "Uncommented line for multiplying 2 numbers"
+$ git commit -m "Corrected formula for multiplying 2 numbers"
 $ git status
-$ git push
+$ git push origin multiply-2-numbers
 $ git log # optional
 ```
diff --git a/slides/forks.md b/slides/forks.md
index fd848cf70007e4f47212fdb95a4dcfa4ee94ede1..c5aa8bc801f7df0fcfce2c0a7cb5606b70827774 100644
--- a/slides/forks.md
+++ b/slides/forks.md
@@ -34,13 +34,12 @@ Browse to the original repository and click on the button `Fork`:
 
 ![Fork the repo](https://help.github.com/assets/images/help/repository/fork_button.jpg)
 
-(Live Demo)
+<div class="fragment">
+<img src="img/icon-live-demo.png" height="100px">
 
 
 ## Time to practice!
 
-(Live Demo)
-
 <br>
 
 Fork the practice repository: <br><br>
@@ -48,6 +47,10 @@ https://git-r3lab.uni.lu/R3school/git.practice
 
 Then, clone your fork to your home directory!
 
+<div class="fragment">
+<br>
+<img src="img/icon-live-demo.png" height="100px">
+
 <div class="fragment">
 <br>
 ```bash
diff --git a/slides/github_gitlab.md b/slides/github_gitlab.md
index 920ba0e78a611a2495b15bd30d7e2a3f4298be87..46d88f8694fc1dccaaaf7687db9b27790d356bea 100644
--- a/slides/github_gitlab.md
+++ b/slides/github_gitlab.md
@@ -10,14 +10,19 @@ GitHub is **public**, whereas GitLab is **restricted/private**.
 Positive point: GitHub and GitLab are (almost) the same.
 
 
-## GitHub (Live Demo)
+## GitHub
 
 [www.github.com](www.github.com)
 <br><img src="https://assets-cdn.github.com/images/modules/logos_page/GitHub-Mark.png" alt="GitHub" style="width: 200px;"/>
 
+<div class="fragment">
+<img src="img/icon-live-demo.png" height="100px">
 
-## GitLab (Live Demo)
+
+## GitLab
 
 [https://git-r3lab.uni.lu](https://git-r3lab.uni.lu)
 <br><img src="https://gitlab.com/gitlab-com/gitlab-artwork/raw/master/logo/logo-extra-whitespace.png" alt="GitLab" style="width: 200px;"/>
 
+<div class="fragment">
+<img src="img/icon-live-demo.png" height="100px">
\ No newline at end of file
diff --git a/slides/homework.md b/slides/homework.md
index eba158fac1f4adbb4c737ac3b005025083c4f99e..018219262f90d45d3a86f6ad97a3a3d58fe6befb 100644
--- a/slides/homework.md
+++ b/slides/homework.md
@@ -13,20 +13,20 @@ Don't forget to properly configure `git` with your username and email as explain
 
 ## Task
 
-   - create a fork of the repository <br>https://git-r3lab.uni.lu/R3/R3.practice
+   - create a fork of the repository <br>https://git-r3lab.uni.lu/R3school/git.practice
    - commit some code
    - create a merge request on `GitLab`.
 
 
 ## Detailed instructions
 
-- First, fork the [https://git-r3lab.uni.lu/R3/R3.practice](https://git-r3lab.uni.lu/R3/R3.practice) repository.
+- First, fork the [https://git-r3lab.uni.lu/R3school/git.practice](https://git-r3lab.uni.lu/R3school/git.practice) repository.
 
 - Create the new branch `homework_myName`.
 
-- Implement a new function (create a new file `sqrt_myName.m`) called `sqrt_myName(x)` that computes the square root of `x`.
+- Implement a new function (create a new file `sqrt_myName.m` in a new folder `src/thirdCommit`) called `sqrt_myName(x)` that computes the square root of `x`.
 
-- Rename the `test.m` file in the `test/` directory to `test_myName.m`.
+- Rename the `test.m` file in the `test/suite` directory to `test_myName.m`.
 
 - Edit the file `test.m` and change the names of the functions accordingly.
 
diff --git a/slides/img/branch-i-state.graffle b/slides/img/branch-i-state.graffle
deleted file mode 100644
index 1963daeff8e3b784c6806fc829b9172f05f9f3e4..0000000000000000000000000000000000000000
Binary files a/slides/img/branch-i-state.graffle and /dev/null differ
diff --git a/slides/img/branch-merge.png b/slides/img/branch-merge.png
index 8499c5dcf20033c032aed70f7925fc2e6acee6ac..b3f4687642cdf98cf086e7d03c86eccea212ed65 100644
Binary files a/slides/img/branch-merge.png and b/slides/img/branch-merge.png differ
diff --git a/slides/img/graffle/branch-i-state.graffle b/slides/img/graffle/branch-i-state.graffle
new file mode 100644
index 0000000000000000000000000000000000000000..7f2e3d401791c62cb2c615fec2dce64c4a6fb787
Binary files /dev/null and b/slides/img/graffle/branch-i-state.graffle differ
diff --git a/slides/img/fork.graffle/data.plist b/slides/img/graffle/fork.graffle/data.plist
similarity index 100%
rename from slides/img/fork.graffle/data.plist
rename to slides/img/graffle/fork.graffle/data.plist
diff --git a/slides/img/fork.graffle/image1.tiff b/slides/img/graffle/fork.graffle/image1.tiff
similarity index 100%
rename from slides/img/fork.graffle/image1.tiff
rename to slides/img/graffle/fork.graffle/image1.tiff
diff --git a/slides/img/fork.graffle/image2.tiff b/slides/img/graffle/fork.graffle/image2.tiff
similarity index 100%
rename from slides/img/fork.graffle/image2.tiff
rename to slides/img/graffle/fork.graffle/image2.tiff
diff --git a/slides/img/gray-linen-background-texture_58348.jpg b/slides/img/gray-linen-background-texture_58348.jpg
deleted file mode 100644
index 42d70c58e51fded30a31380a1d204248c2a6b047..0000000000000000000000000000000000000000
Binary files a/slides/img/gray-linen-background-texture_58348.jpg and /dev/null differ
diff --git a/slides/img/icon-live-demo.png b/slides/img/icon-live-demo.png
new file mode 100644
index 0000000000000000000000000000000000000000..1511dc7e76a9240d19b7e854fe9b6912d098edd8
Binary files /dev/null and b/slides/img/icon-live-demo.png differ
diff --git a/slides/img/r3-training-logo.png b/slides/img/r3-training-logo.png
new file mode 100644
index 0000000000000000000000000000000000000000..48a3aeaa54640a2bde1d4534dd9922d2ea90840c
Binary files /dev/null and b/slides/img/r3-training-logo.png differ
diff --git a/slides/img/remote-0-master.png b/slides/img/remote-0-master.png
deleted file mode 100644
index 41bd35a24b71d7bed56771492e0581bd3ed0e410..0000000000000000000000000000000000000000
Binary files a/slides/img/remote-0-master.png and /dev/null differ
diff --git a/slides/img/remote-1-remote.png b/slides/img/remote-1-remote.png
deleted file mode 100644
index 9b6643a0c531e8ca55297c02bfceeffafa75726e..0000000000000000000000000000000000000000
Binary files a/slides/img/remote-1-remote.png and /dev/null differ
diff --git a/slides/img/remote-2-push.png b/slides/img/remote-2-push.png
deleted file mode 100644
index c869f1ca3a8200475e0407c8167acfc14db94253..0000000000000000000000000000000000000000
Binary files a/slides/img/remote-2-push.png and /dev/null differ
diff --git a/slides/img/remote-i-state.graffle b/slides/img/remote-i-state.graffle
deleted file mode 100644
index 7e60eadf4998b1682571e0ad660d70eaf9aac7be..0000000000000000000000000000000000000000
Binary files a/slides/img/remote-i-state.graffle and /dev/null differ
diff --git a/slides/index.md b/slides/index.md
index 539414da24261f4211cfc315ec1db4b5100e500a..ff85ce364e931d5fb9b6d5312d7c5450e1f8ebdf 100644
--- a/slides/index.md
+++ b/slides/index.md
@@ -1,15 +1,11 @@
-Absolute Beginners<br>
-<img src="img/Git-Logo-Black.png" class="as-is" height="100px"><br>Workshop
-<br>
+<img src="img/Git-Logo-Black.png" class="as-is" height="100px"><br>Training for absolute beginners
 
-<img src="img/logoLCSB.png" class="as-is" height="100px">
+<img src="img/r3-training-logo.png" class="as-is" height="200px">
 
 <br><br><br><br>
-<br><br>
+<br>
 
 January 24th, 2019
 
 **Laurent Heirendt, Ph.D.**<br>
-laurent.heirendt@uni.lu
-
-<br><br><br><br>
+laurent.heirendt@uni.lu
\ No newline at end of file
diff --git a/slides/installation.md b/slides/installation.md
index 8c9cc67aecc707aef39c9dc4bf662584c512f12a..deec7d09a434edccdd7916dd65b4cb66daa93c2e 100644
--- a/slides/installation.md
+++ b/slides/installation.md
@@ -21,7 +21,7 @@ $ sudo apt-get install git-all
 
 ## How to get started?
 
-**Linux (Ubuntu)** and **macOS**
+**macOS**
 
 Start the `Terminal` or `iTerm`.
 
@@ -30,6 +30,11 @@ Start the `Terminal` or `iTerm`.
 
 Start `GUI Bash`.
 
+<br>
+**Linux (Ubuntu)**
+
+Start the `Terminal` or `Terminator`.
+
 
 ## Is `git` properly installed?
 
diff --git a/slides/merge.md b/slides/merge.md
index 02b0e99f68b2eb72df14f07829ec2b2106571963..e7b39dd1ec103b520eeecc35f2e853258f29e707 100644
--- a/slides/merge.md
+++ b/slides/merge.md
@@ -1,7 +1,6 @@
+## Pull and merge requests
 
-## Merge a branch
-
-If you want your feature on the `develop` or `master` branches,
+If you want your changes to be reflected on the `develop` or `master` branches,
 **submit a MR or a PR** via the Github/Gitlab interface.
 
 <br>
@@ -9,35 +8,10 @@ Use the **interface** to make use of your peers to review your code!
 
 <img src="img/branch-merge.png" class="branch-merge" />
 
+
 <br>
 Once merged, you can delete the branch via the interface.
 
-
-## Github interface
-<img src="https://assets-cdn.github.com/images/modules/logos_page/GitHub-Mark.png" alt="GitHub" style="width: 100px;"/>
-
-Detailed information is on [help.github.com/articles/creating-a-pull-request/](https://help.github.com/articles/creating-a-pull-request/).
-
-1. Click on **New pull request**
-
-![New pull request](https://help.github.com/assets/images/help/pull_requests/pull-request-start-review-button.png)
-<br><br>
-2. Compare the branches
-
-![Compare branches](https://help.github.com/assets/images/help/pull_requests/choose-base-and-compare-branches.png)
-
-
-<ol start="3">
-  <li>Assign your peer
-  <br>
-
-  ![Assigning a peer](https://help.github.com/assets/images/help/issues/issues_assigning_dropdown.png)
-  </li>
-</ol>
-
-
-<ol start="4">
-  <li>Submit the PR
-
-  ![Submit MR](https://help.github.com/assets/images/help/pull_requests/pullrequest-send.png)</li>
-</ol>
+<div class="fragment">
+<br>
+<img src="img/icon-live-demo.png" height="100px">
\ No newline at end of file
diff --git a/slides/overview.md b/slides/overview.md
index 6d8a0f18ae637834b8c101f5366e387c5983dbc0..b6fdb1f93f877caa319acb75f2890ed3283c9c39 100644
--- a/slides/overview.md
+++ b/slides/overview.md
@@ -2,10 +2,15 @@
 
 0. The terminal
 1. The editor
-1. What is `git`? What is the use of `git`? <!--(5 min)//-->
-2. GitHub and GitLab <!--(5min)//-->
+2. What is `git`? What is the use of `git`? <!--(5 min)//-->
 3. Installation of `git`
-4. The 5 essential commands <!--(10 min)//-->
+4. GitHub and GitLab <!--(5min)//-->
+5. How do I configure `git`? <!--(5min)//-->
+6. Where and how to start <!--(5min)//-->
+7. What is a fork? <!--(5min)//-->
+8. What are branches?
+9. The 5 essential commands <!--(10 min)//-->
     * `pull` / `status` / `add` / `commit` / `push`
-5. Branches <!--(10 min)//-->
-7. Best practices
+10. What are merge/pull requests? <!--(10 min)//-->
+11. How do I synchronize my fork?
+12. Best practices
\ No newline at end of file
diff --git a/slides/syncFork.md b/slides/syncFork.md
index 75066c06c689d9616d7c73ec668b013c6744d8ad..aacd622ff512e679e3d9d1466bd58e64ef87c142 100644
--- a/slides/syncFork.md
+++ b/slides/syncFork.md
@@ -44,4 +44,4 @@ Do the same for the `develop` branch<br>
 
 ## Time to practice!
 
-(Live Demo)
\ No newline at end of file
+<img src="img/icon-live-demo.png" height="100px">
\ No newline at end of file
diff --git a/slides/thanks.md b/slides/thanks.md
index c88cfb83f47ad22d3d1351b12b82914253da7f92..7337d53f0c95ed0f7d3bca99e1b6afa1cb59552b 100644
--- a/slides/thanks.md
+++ b/slides/thanks.md
@@ -30,3 +30,12 @@ https://git-scm.com/book/en/v2
 
 <br>[3]: Cheat sheet: http://rogerdudler.github.io/git-guide
 
+
+## Thank you.
+
+<img src="img/r3-training-logo.png" height="200px">
+
+Contact us if you need help:
+
+r3lab.core@uni.lu
+
diff --git a/slides/the_editor.md b/slides/the_editor.md
index 6de4cfcda120fd441a8bc70b9f57af7eac776d0d..6a9ad3b5974c7640cbfd252eb1fded5854105f6b 100644
--- a/slides/the_editor.md
+++ b/slides/the_editor.md
@@ -8,4 +8,4 @@ Recommended editors:
 
 ## Visual Studio Code
 
-<br>(Live Demo)
\ No newline at end of file
+<br><img src="img/icon-live-demo.png" height="100px">
\ No newline at end of file
diff --git a/slides/the_terminal.md b/slides/the_terminal.md
index 1c6c663fc330437ffaf76a165775a1b6849d7da4..61f9a9cc51ecccb12433f73a6de534f21c1d70b7 100644
--- a/slides/the_terminal.md
+++ b/slides/the_terminal.md
@@ -43,7 +43,7 @@ in your home directory (unless otherwise configured), denoted as `~/`.
 
 List the contents of a directory
 ```bash
-$ ls
+$ ls #-lash
 ```
 
 <div class="fragment">
diff --git a/slides/what_is_git.md b/slides/what_is_git.md
index a0489ee7238b4a301b3f66e52b8b8b153056509c..f33694ff2c6f3177273d3f6bb519432cca1ec810 100644
--- a/slides/what_is_git.md
+++ b/slides/what_is_git.md
@@ -11,7 +11,7 @@
 <div align="left"><small>[1] *https://en.wikipedia.org/wiki/Git*</small></div>
 
 
-## Funny story
+## The inventor of `git`
 
 ![](img/git_definition.png)
 <br><br>