Emphasize the prerequisite

README.md

@@ -12,6 +12,19 @@ history, etc, GitLab makes your projects more reproducible and collaboration
 with colleagues easy ([introduction](http://doc.gitlab.com/ce/gitlab-basics/README.html)).
 
 
+## Prerequisites
+
+Affinity with the UNIX shell is required. For this reason is mandatory to
+follow our
+[Practical Linux](https://git.lumc.nl/courses/practical-linux-course)
+course before.
+
+We encourage you to bring your own laptop, but make sure it has a terminal and
+[Git](http://git-scm.com/) installed. We work with
+[Linux](http://en.wikipedia.org/wiki/Linux), but Git also runs on Mac OSX.
+Windows is not ideal, but here are [some suggestions](WINDOWS.md).
+
+
 ## Coordinates
 
 Details for the next session:
@@ -19,7 +32,7 @@ Details for the next session:
 - Time: 9:00 - 15:00
 - Location: J1-84
 - Teachers:
-  - Guy Allard
+  - Jonathan Vis
   - Mihai Lefter
 - Registration via www.medgencentre.nl. Direct access to the [registration form](https://forms.lumc.nl/lumc2/GITcourse).
 
@@ -38,24 +51,6 @@ Details for the next session:
 | 14:15 | [Practical](https://git.lumc.nl/courses/gitcourse/wikis/files-most-recent/remotes_handouts.pdf)            |                   |                           |
 | 15:00 | Questions, closing                                                                     |                   |                           |
 
-## Prerequisites
-
-Affinity with the UNIX shell is required before taking the course. For
-example, our
-[Practical Linux Course](https://git.lumc.nl/courses/practical-linux-course)
-is more than enough. In addition, you can find some nice
-[tutorials here](http://www.ee.surrey.ac.uk/Teaching/Unix/).
-
-We encourage you to bring your own laptop, but make sure it has a terminal and
-[Git](http://git-scm.com/) installed. We work with
-[Linux](http://en.wikipedia.org/wiki/Linux), but Git also runs on Mac OSX.
-Windows is not ideal, but here are [some suggestions](WINDOWS.md).
-
-We can also provide you with a laptop that has all the required software
-installed. The lessons are interactive, meaning that you really need a
-laptop.
-
-
 ## Further reading
 
 - [Code School - Try Git](https://try.github.io/) (you could even try this