Question

Does the site offer any material to refer on the subject or should I find alternative sources?

Answer 1

This site doesn't really work that way, it's more like a forum, you can ask other posters for suggestions, but I don't expect to find a list somewhere that's managed by the website handing out material.
Try:
http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-189-a-gentle-introduction-to-programming-using-python-january-iap-2011/

And you should be getting links in the emails to lectures and materials.
Hope this has helped :)

Answer 2

Its an interactive site @Chenge. People help each other out. You cannot expect materials here.