diff --git a/.gitignore b/.gitignore
index 385c254da2603b3a636648b97f4a52ef3a6622c4..9ea79cb84fa69cf555ab0dcc68ab397e4d4782e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,8 @@
+index.html
+package-lock.json
 dist/
 public/
-node_modules
+node_modules/
 dist
 *.log
 .sass-cache
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4e6377942851c431458a9a802f88fb7f3bf5f6a0..2bc8b0a6b3f349d7e0503d0a584f3ebeb59d798f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -20,7 +20,8 @@ pages:
 
     # build the develop version into latest
     - git checkout develop
-    - git pull origin develop
+    - git fetch origin develop
+    - git reset --hard origin/develop
     - grunt dist
     - mkdir latest
     - mv public/* latest/.
diff --git a/index.html b/index.html
deleted file mode 100644
index 7ebe98eb8ce0e6e3360d33f058cc88067d4abfd5..0000000000000000000000000000000000000000
--- a/index.html
+++ /dev/null
@@ -1,180 +0,0 @@
-<!doctype html>
-<html lang="en">
-
-    <head>
-        <meta charset="utf-8">
-
-        <title>Basic git training</title>
-
-        <meta name="apple-mobile-web-app-capable" content="yes" />
-        <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
-
-        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
-
-        <link rel="stylesheet" href="bower_components/reveal.js/css/reveal.min.css">
-
-        <link rel="stylesheet" href="bower_components/reveal.js/css/theme/lcsb.css" id="theme">
-
-        <link rel="stylesheet" href="css/style.css">
-
-        <!-- For syntax highlighting -->
-        <link rel="stylesheet" href="bower_components/reveal.js/lib/css/zenburn.css" id="highlight-theme">
-
-        <!-- If the query includes 'print-pdf', use the PDF print sheet -->
-        <script>
-          document.write( '<link rel="stylesheet" href="bower_components/reveal.js/css/print/' + ( window.location.search.match( /print-pdf/gi ) ? 'pdf' : 'paper' ) + '.css" type="text/css" media="print">' );
-        </script>
-
-        <!--[if lt IE 9]>
-        <script src="lib/js/html5shiv.js"></script>
-        <![endif]-->
-
-        <link rel="shortcut icon" type="image/x-icon" href="favicon.ico" />
-    </head>
-
-    <body>
-
-        <div class="reveal">
-
-            <div class="slides">
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/sbgBackgroundWhite.jpg" data-markdown="slides/index.md"></section>
-
-
-
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/overview.md"></section>
-
-
-
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/the_terminal.md"></section>
-
-
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-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/what_is_git.md"></section>
-
-
-
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/installation.md"></section>
-
-
-
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/essential_commands.md"></section>
-
-
-
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/github_gitlab.md"></section>
-
-
-
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/branches.md"></section>
-
-
-
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/best_practices.md"></section>
-
-
-
-
-
-
-
-    <section data-separator="^\n\n\n"
-             data-vertical="^\n\n"
-             data-background="img/whiteBG.jpg" data-markdown="slides/thanks.md"></section>
-
-
-
-
-
-            </div>
-
-        </div>
-
-        <script src="bower_components/reveal.js/lib/js/head.min.js"></script>
-        <script src="bower_components/reveal.js/js/reveal.min.js"></script>
-        <script>
-            // Configure Reveal
-            // Full list of configuration options available here:
-            // https://github.com/hakimel/reveal.js#configuration
-            Reveal.initialize({
-                controls: true,
-                progress: true,
-                history: true,
-                center: true,
-                fragments: true,
-
-                theme: Reveal.getQueryHash().theme, // available themes are in /css/theme
-                transition: Reveal.getQueryHash().transition || 'default', // default/cube/page/concave/zoom/linear/fade/none
-
-                // Optional libraries used to extend on reveal.js
-                dependencies: [
-                    { src: 'bower_components/reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
-                    { src: 'bower_components/reveal.js/plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
-                    { src: 'bower_components/reveal.js/plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
-                    { src: 'bower_components/reveal.js/plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
-                    { src: 'bower_components/reveal.js/plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
-                    { src: 'bower_components/reveal.js/plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } },
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-
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-                ]
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-
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diff --git a/slides/homework.md b/slides/homework.md
index e812373753aecf1e0a77ac9fdc628873c497504f..eba158fac1f4adbb4c737ac3b005025083c4f99e 100644
--- a/slides/homework.md
+++ b/slides/homework.md
@@ -1,26 +1,34 @@
 ## Homework on GitLab
 
-*This exercise has to be done on your lab computer on which `Matlab` **is** installed. Don't forget to properly configure `git` with your username and email, as we explained in the training slides.*
+This exercise has to be done on your lab computer on which `Matlab` or `octave` **are** installed.
 
+<div class="fragment">
 <br>
-During the training, you committed to the
-<br>
-[https://git-r3lab.uni.lu/git-training/practice](https://git-r3lab.uni.lu/git-training/practice)
-repository.
+More information on how install these software are on [mathworks.com](www.mathworks.com]) and on [gnu.org/software/octave](gnu.org/software/octave)
 
+<div class="fragment">
 <br>
-Your task is to create a fork of this repository, commit some code and create a merge request on `GitLab`.
+Don't forget to properly configure `git` with your username and email as explained in the training slides.
+
+
+## Task
 
+   - create a fork of the repository <br>https://git-r3lab.uni.lu/R3/R3.practice
+   - commit some code
+   - create a merge request on `GitLab`.
 
-## Homework: instructions
 
-- First, fork the [https://git-r3lab.uni.lu/git-training/practice](https://git-r3lab.uni.lu/git-training/practice) repository.
+## Detailed instructions
+
+- First, fork the [https://git-r3lab.uni.lu/R3/R3.practice](https://git-r3lab.uni.lu/R3/R3.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`.
 
-- Copy the `test.m` file to `test_myName.m` and change the names of the functions accordingly.
+- Rename the `test.m` file in the `test/` directory to `test_myName.m`.
+
+- Edit the file `test.m` and change the names of the functions accordingly.
 
 
 - Before submitting the merge request, verify locally that your code is running properly.
@@ -32,7 +40,7 @@ Your task is to create a fork of this repository, commit some code and create a
 
 - Create a merge-request.
 
-- Assign either Laurent (@laurent.heirendt) or Sylvain (@sylvain.arreckx) depending on your group and your merge-request will be reviewed by one of us.
+- Assign @laurent.heirendt and your merge-request will be reviewed.
 
 <br>
 That's it!
diff --git a/slides/img/git_definition.png b/slides/img/git_definition.png
new file mode 100644
index 0000000000000000000000000000000000000000..0676fc7a299fae5c7c3389eed91e21fcb050c629
Binary files /dev/null and b/slides/img/git_definition.png differ
diff --git a/slides/img/installation.png b/slides/img/installation.png
new file mode 100644
index 0000000000000000000000000000000000000000..dd278a70c5e8237d32c047759e47fb0812db9db0
Binary files /dev/null and b/slides/img/installation.png differ
diff --git a/slides/index.md b/slides/index.md
index a80758a691c067be6e29ad8c8525dc8d633fe67a..539414da24261f4211cfc315ec1db4b5100e500a 100644
--- a/slides/index.md
+++ b/slides/index.md
@@ -5,10 +5,11 @@ Absolute Beginners<br>
 <img src="img/logoLCSB.png" class="as-is" height="100px">
 
 <br><br><br><br>
-<br>
+<br><br>
 
-April 12th, 2017
+January 24th, 2019
 
-Sylvain Arreckx & Laurent Heirendt
+**Laurent Heirendt, Ph.D.**<br>
+laurent.heirendt@uni.lu
 
 <br><br><br><br>
diff --git a/slides/installation.md b/slides/installation.md
index 315f3d29f757ed85c388d36f1d1c2af0e2896458..258984f06e9917f97f858d35554ede049ebfff76 100644
--- a/slides/installation.md
+++ b/slides/installation.md
@@ -15,23 +15,19 @@ Install *Xcode Command Line Tools*
 <br>
 **Windows**
 
-Follow instructions on *[git-for-windows.github.io](https://git-for-windows.github.io)*.
-
-**or:** `MobaXTerm` with `git` plugin: *[mobaxterm.mobatek.net](https://mobaxterm.mobatek.net)*.
-
-<small>More on *[git-scm.com/book/en/v2/Getting-Started-Installing-Git](https://git-scm.com/book/en/v2/Getting-Started-Installing-Git)*</small>
+Install Git Bash: <br>`https://git-scm.com/download/win`
 
 
 ## How to start?
 
 **Linux (Ubuntu)** and **macOS**
 
-Start the terminal (or any other shell)
+Start the `Terminal` or `iTerm`.
 
 <br>
 **Windows**
 
-Start `GUI Bash` or `MobaXTerm`.
+Start `GUI Bash`.
 
 
 ## How to configure `git`?
@@ -62,24 +58,53 @@ $ git config --list
 This should list the configuration with `user.name` and `user.email`.
 
 
+## How to set my SSH key?
+
+Check if you already have an SSH key:
+
+```bash
+$ ls -al ~/.ssh
+```
+If there is a file with an extension `.pub`, you already 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
+```
+
+<br>
+Then, add the SSH key to Github/Gitlab (see demo).
+
+
 ## How do I `clone` a repository?
 
 You can clone a repository with
 ```bash
-$ git clone https://github.com/userName/myRepo.git myRepo
+$ git clone git@github.com:userName/myRepo.git myRepo
 ```
 
-<div class="fragment">
 <br>
-Clone the training repository with
+If you did not configure your SSH key, clone using HTTPS:
 ```bash
-$ git clone https://github.com/uni-lu/practice.git practice
+$ git clone https://github.com/userName/myRepo.git myRepo
 ```
 <br>
 You may be prompted to enter your credentials.
 
-<div class="fragment">
+
+## Clone the practice repository
+
+(Live Demo)
+
 <br>
+
+Clone the training repository! <br><br>
+https://git-r3lab.uni.lu/R3.training/git.practice
+
+<div class="fragment">
+<br><br>
 Any other rudimentary method such as
 
 *'I simply download the `.zip` un unzip it - works like a charm!'*
diff --git a/slides/list.json b/slides/list.json
index f4e8a89bfc1eeb1f98ebd2f99cb55c80e60bb842..860fa1bf8a7e3c56e4e30a067e5ef6aced39da23 100644
--- a/slides/list.json
+++ b/slides/list.json
@@ -17,6 +17,12 @@
           "data-background": "img/whiteBG.jpg"
         }
     },
+    {
+        "filename": "the_editor.md",
+        "attr": {
+          "data-background": "img/whiteBG.jpg"
+        }
+    },
     {
         "filename": "what_is_git.md",
         "attr": {
@@ -24,19 +30,19 @@
         }
     },
     {
-        "filename": "installation.md",
+        "filename": "github_gitlab.md",
         "attr": {
           "data-background": "img/whiteBG.jpg"
         }
     },
     {
-        "filename": "essential_commands.md",
+        "filename": "installation.md",
         "attr": {
           "data-background": "img/whiteBG.jpg"
         }
     },
     {
-        "filename": "github_gitlab.md",
+        "filename": "essential_commands.md",
         "attr": {
           "data-background": "img/whiteBG.jpg"
         }
@@ -53,6 +59,12 @@
           "data-background": "img/whiteBG.jpg"
         }
     },
+    {
+        "filename": "homework.md",
+        "attr": {
+          "data-background": "img/whiteBG.jpg"
+        }
+    },
     {
         "filename": "thanks.md",
         "attr": {
diff --git a/slides/overview.md b/slides/overview.md
index 9968e215c1d92df3c5899f2d6eda305674bdb12d..6d8a0f18ae637834b8c101f5366e387c5983dbc0 100644
--- a/slides/overview.md
+++ b/slides/overview.md
@@ -1,6 +1,7 @@
 ## Overview
 
-0. The Terminal
+0. The terminal
+1. The editor
 1. What is `git`? What is the use of `git`? <!--(5 min)//-->
 2. GitHub and GitLab <!--(5min)//-->
 3. Installation of `git`
diff --git a/slides/ready.md b/slides/ready.md
index 8083fdaa8ddbc611f3e2933917370f0e3e44ef82..10bdd8c2d6487b004d59155128537a33ad3cf791 100644
--- a/slides/ready.md
+++ b/slides/ready.md
@@ -1,5 +1,5 @@
 ## Ready to practice?
 
-<br>Go to https://github.com/uni-lu/group_members
+<br>Go to https://git-r3lab.uni.lu/R3.training/git.practice
 
 <br>And follow the instructions in the `README` file.
diff --git a/slides/the_editor.md b/slides/the_editor.md
new file mode 100644
index 0000000000000000000000000000000000000000..6de4cfcda120fd441a8bc70b9f57af7eac776d0d
--- /dev/null
+++ b/slides/the_editor.md
@@ -0,0 +1,11 @@
+## The editor
+
+Recommended editors:
+
+- **Visual Studio Code** <br>(https://code.visualstudio.com)
+- **Atom** <br>(https://atom.io)
+
+
+## Visual Studio Code
+
+<br>(Live Demo)
\ No newline at end of file
diff --git a/slides/the_terminal.md b/slides/the_terminal.md
index 30844f9443182e47adcbcfa2a5c41a9cd74c9c76..d63951188fe0e1e98328a138679be04b16b7c3a0 100644
--- a/slides/the_terminal.md
+++ b/slides/the_terminal.md
@@ -1,4 +1,26 @@
-## The Terminal (shell)
+## The terminal (shell)
+
+<br>
+**UNIX users (macOS & Linux):**
+
+Start the Terminal from your `/Applications` directoy.
+
+*Pro Tip:* Install iTerm2: <br>`https://www.iterm2.com`
+
+<br>
+**Windows users:**
+
+Install Git Bash: <br>`https://git-scm.com/download/win`
+
+<br>
+**Linux users:**
+
+Launch default terminal.
+*Pro Tip:* Install Terminator: <br>`https://launchpad.net/terminator`
+
+
+
+## First steps in the terminal
 
 Starting the terminal presents itself with a line where you can enter a command
 ```bash
diff --git a/slides/what_is_git.md b/slides/what_is_git.md
index 8488d139447b8e405b22b7d15c47f8c467a98bd2..a0489ee7238b4a301b3f66e52b8b8b153056509c 100644
--- a/slides/what_is_git.md
+++ b/slides/what_is_git.md
@@ -16,7 +16,7 @@
 ![](img/git_definition.png)
 <br><br>
 ```
-I'm an egotistical bastard, and I name all my projects after myself. 
+I'm an egotistical bastard, and I name all my projects after myself.
 First Linux, now git.
 ```
 Linus Torvald (2007-06-14)