diff --git a/external/exchange-channels/duma.md b/external/exchange-channels/duma.md
index 74f459978991af7a6b8304f2b41dae2e092b4beb..e1b44ad2674bd96bf60bf2b466a8a8539af13118 100644
--- a/external/exchange-channels/duma.md
+++ b/external/exchange-channels/duma.md
@@ -70,4 +70,4 @@ Go to the help section of your access link
 
 And follow the steps in the **Using the command line** section.
 
-<br/> ![Alt](../../external/img/duma_cli_tokens.png "Title") <br/><br/><br/>
\ No newline at end of file
+<br/> ![Alt](../../external/img/duma_cli_tokens.png "Title") <br/><br/><br/>
diff --git a/external/exchange-channels/owncloud.md b/external/exchange-channels/owncloud.md
index 2283ef0d9b41e4f47c8936a2d74fed173a55ef61..d55ab010dd608568db813f3239810ee2a2140bc2 100644
--- a/external/exchange-channels/owncloud.md
+++ b/external/exchange-channels/owncloud.md
@@ -33,5 +33,3 @@ When sharing research data, one should observe the following guidance using Ownc
 
 
  **IMPORTANT NOTE: Whenever the LCSB shares an ownCloud folder with you (collaborator), the share password will be reachable via link, which will expire. Therefore you should make a record of your password once you view it.**
-
-
diff --git a/external/img/r3_logo.png b/external/img/r3_logo.png
new file mode 100644
index 0000000000000000000000000000000000000000..0fb8ea47583f01c6420a4728ee9e1860018f6cff
Binary files /dev/null and b/external/img/r3_logo.png differ
diff --git a/external/markdown/markdown.md b/external/markdown/markdown.md
new file mode 100644
index 0000000000000000000000000000000000000000..770581c73d2a520538dc7209f24b0533f43883be
--- /dev/null
+++ b/external/markdown/markdown.md
@@ -0,0 +1,252 @@
+---
+layout: page
+permalink: /external/markdown/
+---
+
+# Markdown
+Markdown is a lightweight markup language with plain text formatting syntax which became very popular in past decade and which nowadays serves as a standard in various digital communication channels.
+
+## Main features of Markdown:
+  * It has very simple syntax easy to learn.
+    
+  * It is already widely used in scientific community.
+  
+  * It separates content from visual presentation so it allows you to focus on writing, not formatting.
+  
+  * It is a non-proprietary file format.
+  
+  * It is powerful - allows to format text with very little effort.
+
+  * It is portable - since it is actually plain text, it can be opened by literally all text editors.
+  
+  * It is machine readable - as simple text, markdown documents can be tracked and version using a versioning system (Git, SVN)
+  
+  * small file size
+  
+  * easy to convert to other formats - existing editors and command line tools (e.g. [pandoc](https://pandoc.org/) allows for easy conversion between Markdown and other widely used formats like HTML, PDF, docx, LaTeX, etc.
+  
+
+## Syntax
+
+<table>
+  <thead>
+    <tr>
+      <th>Markdown</th>
+      <th>Rendered Output</th>
+    </tr>
+  </thead>
+  <tbody>
+  <tr>
+    <td>
+      <code>
+        # Header 1<br>
+        ## Header 2<br>
+        ### Header 3 <br>
+        #### Header 4 
+      </code>
+    </td>
+    <td>
+      <h1>Header 1</h1><br>
+      <h2>Header 2</h2><br>
+      <h3>Header 3</h3><br>
+      <h4>Header 4</h4>
+    </td>
+    </tr>
+    <tr>
+      <td>
+        <code>
+        To **bold** text, add **two asterisks** or __underscores__ before and after a word or phrase.</br>
+        To make text **italic** text, add *one asterisks* or _underscores_.
+        </code>
+      </td>
+      <td>
+        To make phrase <strong>bold</strong> text, add <strong>two asterisks</strong> or <strong>underscores</strong> before and after a word or phrase.</br>
+        To make text <i>italic</i>, add <i>one asterisks</i> or <i>underscores</i>.
+      </td>
+    </tr>
+    <tr>
+      <td>
+        <code>
+        Use numbers for ordered lists:  <br />
+          1. First item<br />
+          2. Second item<br />
+          3. Third item<br />
+          &nbsp;&nbsp;&nbsp;&nbsp;1. Indented item<br />
+          &nbsp;&nbsp;&nbsp;&nbsp;2. Indented item<br />
+          4. Fourth item
+        </code>
+      </td>
+      <td>
+        <ol>
+          <li>First item</li>
+          <li>Second item</li>
+          <li>Third item
+            <ol>
+              <li>Indented item</li>
+              <li>Indented item</li>
+            </ol>
+          </li>
+          <li>Fourth item</li>
+        </ol>
+      </td>
+    </tr>
+    <tr>
+      <td>
+        <code>
+        For unordered lists
+          * First item<br />
+          * Second item<br />
+          * Third item<br />
+          * Fourth item
+        </code>
+      </td>
+      <td>
+        <ul>
+          <li>First item</li>
+          <li>Second item</li>
+          <li>Third item</li>
+          <li>Fourth item</li>
+        </ul>
+      </td>
+    </tr>
+    <tr>
+      <td>
+        <code>
+        Include links referring to a web [page](https://www.markdownguide.org/)
+        </code>
+      </td>
+      <td>
+        Include links referring to a web <a href="https://www.markdownguide.org/">page</a>
+      </td>
+    </tr>
+    <tr>
+      <td>
+        <code>
+        Include local pictures: ![My awesome picture](/img/r3_logo.png)
+        </code>
+      </td>
+      <td>
+        Include local pictures: <img src="../img/img.png">
+      </td>
+    </tr>
+    <tr>
+      <td>
+        <code>
+        Include code blocks! </br>
+        ```</br>
+        myAwesomeFunction <- function(x) x+1;</br>
+        # Apply function </br>
+        myAwesomeFunction(2);</br>
+        ```
+        </code>
+      </td>
+      <td>
+      Include code blocks! </br>
+      <code>
+      myAwesomeFunction <- function(x) x+1;</br> 
+      # Apply function</br>  
+      myAwesomeFunction(2);
+      </code>
+      </td>
+    </tr>
+  </tbody>
+</table>
+
+This is an overview of basic Markdown features. For more in-build features, please see various online [documentation](https://www.markdownguide.org/basic-syntax/).
+
+### Advanced formatting  
+Plain syntax is usually enough. But special requirements lead to development of many of so called ["flavored" markdown syntaxes](https://github.com/commonmark/commonmark-spec/wiki/markdown-flavors) implementing more formatting functionality such as linking different sections, highlighting blocks of code, table extensions, strikethroughs, ...
+
+Another big advantage of Markdown is that it can contain HTML tags, which makes formatting very flexible.
+
+
+## When to use markdown?
+  * **Documentation** - Markdown is a perfect solution for description of a data package, project folder, workflow or code repository. Using Markdown ensures that the description will be accessible to everyone even after decades while still nicely structured. Guide for writing a good README is not covered by this HowTo page but you can find plenty of resources online, e.g.:
+    * [guide](https://data.research.cornell.edu/content/readme) from Cornell University, UK
+    * [GitHub page](https://github.com/mhucka/readmine) for READMEs in a software repository
+    
+  * **Blogging and tutorials** - structured document with chunks of code, pictures and results of the analyses can be easily converted to HTML format and posted on personal/team websites.
+  
+  * **Notes and meeting minutes** - you can use following template for simple and nicely structured meeting notes:
+<table>
+  <thead>
+    <tr>
+      <th>Markdown</th>
+      <th>Rendered Output</th>
+    </tr>
+  </thead>
+  <tbody>
+  <tr>
+    <td>
+      <code>
+    # DocTitle</br>
+    ### Attendees:</br>
+    ### Location:</br>
+    ## Objective / Agenda</br>
+    ## Meeting Notes</br>
+      * first note </br>
+      * second note </br>
+      * ...</br>
+      </br>
+    ## Actions</br>
+    - [ ] Josh, Alice and Cindy will do this.</br>
+    - [x] Bob stops doing that.</br>
+    - [ ] Will and Tom will take care of those
+    </code>
+    </td>
+    <td>
+      <code>
+    <h1>DocTitle</h1></br>
+    <h3> Attendees:<h3></br>
+    <h3> Location:</h3></br>
+    <h2> Objective / Agenda</h2></br>
+    <h2> Meeting Notes</h2></br>
+      <ul>
+        <li> first note</li>
+        <li>second note</li>
+        <li>...</li>
+      </ul>
+    <h2> Actions</h2></br>
+    <input type="checkbox" > Josh, Alice and Cindy will do this.</input></br>
+    <input type="checkbox" checked="checked"> Bob stops doing that.</input></br>
+    <input type="checkbox" > Vanessa and Tom will take care of those</input></br>
+    </code>
+    </td>
+  </tr>
+</tbody>
+</table>
+
+  * **Analyses,reports and papers** - embedding [R markdown](https://rmarkdown.rstudio.com/) in an R project allows you to include executable code and related text in the very same document. This brings unprecedented level of consistency, shareability and reproducibility into the workflows.
+ 
+  * **Online discussion forums** - many scientific and non-scientific discussion forums and social networks support Markdown for formatting the content of messages (e.g. [StackOverflow](https://stackoverflow.com/editing-help), [GitHub](https://help.github.com/en/github/writing-on-github/basic-writing-and-formatting-syntax), Reddit or even Facebook) 
+  
+  * **Presentations** - variety of tools support Markdown-powered slide generation, e.g. [reveal.js](https://revealjs.com/#/), [HackerSlides](https://github.com/jacksingleton/hacker-slides) or [landslide](https://github.com/adamzap/landslide)
+ 
+## Cases when Markdown is not easily applicable
+
+  * **Official documents** like legal agreements and project proposals could be in theory written in Markdown but it is not yet accepted by administrative processes.
+  
+  * **Big structured tables** with multilevel headers or special formatting can be written in HTML editors and then pasted into your Markdown document.
+  
+  * **Thesis writing** requires support of citation managers and additional formatting. This can be achieved but usually is conditioned by embedding Latex into your workflow.
+
+## Editors
+Markdown file can be written in any text editor. There are many editors supporting rendering and live preview, here are some of them: 
+
+  * Freeware
+    * Atom 
+    * Dillinger
+    * Visual Studio Code
+    * ghostwriter
+    * Typora 
+    * HackMD
+    * ...
+    
+  * Payware:
+    * iA Writer
+    * SublimeText
+    * ByWord
+    
+  * Online
+    * [GitHub pages](https://pages.github.com/)
+    * [stackedit.io](stackedit.io)
diff --git a/index.md b/index.md
index 4714610d03558140077f986169211a8ecd9958d2..180a4a53f498f33432dfa57273d61dfdb68db4a0 100644
--- a/index.md
+++ b/index.md
@@ -12,3 +12,4 @@ Bioinformatics Core assists Luxembourg Centre for Systems Biomedicine ([LCSB](ht
 
   * [Exchange data with collaborators](./external/exchange-channels/)
   * [Registering human-subject data to DAISY](./external/daisy/)
+  * [Markdown markup language](./external/markdown/)