Fix README

README.md

@@ -43,7 +43,12 @@ weather-type approach".
 
 ## Setup the environment for this course
 
-See the file
+One of the first step is to setup a good computing environment. However, it may
+be better to first read [this introduction on Linux and
+Bash](https://meige-legi.gricad-pages.univ-grenoble-alpes.fr/scientific-computing-m2-efm/001_intro_bash.slides.html)
+to understand what we are going to do.
+
+The installation instructions are in this file:
 [install.md](https://gricad-gitlab.univ-grenoble-alpes.fr/meige-legi/scientific-computing-m2-efm/-/blob/master/install.md).
 Note that you can copy/paste commands!