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..b355f40b5087ae44d042de0154d5dda5184b3db7 100644
--- a/slides/installation.md
+++ b/slides/installation.md
@@ -26,12 +26,12 @@ Follow instructions on *[git-for-windows.github.io](https://git-for-windows.gith
 
 **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`?
@@ -61,6 +61,22 @@ $ git config --list
 <br>
 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.
+
+If you don’t have yet an SSH key, you have to generate one:
+```bash
+$ ssh-keygen -t rsa
+```
+
+Then, add the SSH key to Github/Gitlab (see demo).
+
 
 ## How do I `clone` a repository?
 
diff --git a/slides/list.json b/slides/list.json
index f4e8a89bfc1eeb1f98ebd2f99cb55c80e60bb842..7892c75cd3655e77103e32c32283bf588aba2dad 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"
         }
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/the_editor.md b/slides/the_editor.md
new file mode 100644
index 0000000000000000000000000000000000000000..dfd036b9dbcbda4976954fbce9a56358e41e532a
--- /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
+
+<img src="https://code.visualstudio.com/assets/docs/nodejs/extensions/document_this.gif" alt="visualStudioCode"/>
\ No newline at end of file
diff --git a/slides/the_terminal.md b/slides/the_terminal.md
index 30844f9443182e47adcbcfa2a5c41a9cd74c9c76..2b9d37045e0c9a47252607a601cf57cf61830ed0 100644
--- a/slides/the_terminal.md
+++ b/slides/the_terminal.md
@@ -1,4 +1,21 @@
-## The Terminal (shell)
+## The terminal (shell)
+
+<div class="fragment">
+<br>
+**UNIX users (macOS & Linux):**
+
+Start the terminal from your `/Applications` directoy.
+
+*Pro Tip:* Download iTerm2: <br>`https://www.iterm2.com`
+
+<br>
+**Windows users:**
+
+Install Git Bash: <br>`https://git-scm.com/download/win`
+
+
+
+## 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)