Update 'README.md'

README.md

@@ -4,10 +4,36 @@
 
 Repository for training Git session
 
-## Overview
-
-- Please see the [Documentation](http://www.climate.be/Git_Training/docs) for common usages and change log.
-- Having trouble? Get help with [Troubleshooting](http://www.climate.be/Git_Training/docs/troubleshooting.html)
+## Getting started
+
+Prepare your environment for the first use of Git.
+
+For instance:
+
+```
+git config --global user.name "My name"
+git config --global user.email "my_mail@uclouvain.be"
+git config --global color.ui auto
+git config --global core.editor "vim"
+git config --global push.default simple
+```
+Clone the Git_Training repository.
+
+For instance:
+
+```
+git clone http://my_login@www.climate.be:3000/TECLIM/Git_Training.git
+```
+Or:
+
+```
+[ ! -f ~/.ssh/id_rsa.pub ] && ssh-keygen -t rsa
+cat ~/.ssh/id_rsa.pub | xclip -sel clip
+```
+Paste in GOGS: ssh-keys tab (Settings), and:
+```
+git clone ssh://git@www.climate.be:3022/TECLIM/Git_Training.git
+```
 
 ## Features