add links to 'getting started'

README.md

@@ -19,6 +19,13 @@ All content is open —really open, i.e., you can use, share, mod, remix— and
 
 #### Find the list of IPython Notebooks, with links to nbviewer, in the [Wiki](https://github.com/numerical-mooc/numerical-mooc/wiki).
 
+## Getting Started
+
+1. Introduction to the command line: [OS X version]](https://github.com/numerical-mooc/numerical-mooc/blob/master/lessons/00_getting_started/00_01_Intro_to_the_command_line_osx.md); [RedHat version](https://github.com/numerical-mooc/numerical-mooc/blob/master/lessons/00_getting_started/00_01_Intro_to_the_command_line_redhat.md)
+2. [Installing Jupyter](https://github.com/numerical-mooc/numerical-mooc/blob/master/lessons/00_getting_started/00_02_Installing_Jupyter.md)
+3. [Introduction to Jupyter notebooks](https://github.com/numerical-mooc/numerical-mooc/blob/master/lessons/00_getting_started/00_03_Intro_to_Jupyter_notebook.md)
+4. [Introduction to git](https://github.com/numerical-mooc/numerical-mooc/blob/master/lessons/00_getting_started/00_04_Intro_to_git.md)
+
 ## Course Modules
 
 1. [**The phugoid model of glider flight.**](https://github.com/numerical-mooc/numerical-mooc/tree/master/lessons/01_phugoid)