Question

pls how do you start the course

Answer 1

This isn't a specific course, it's more of an independent group of people interested in computer science. Look for courses lower down on the list of courses to find specific cs courses.

Answer 2

Lifesaver is right I just want to add it would be great help to look under resources for tags and materials which is provided , look for what you want to learn first then join the study groups

Answer 3

Exactly. The mit course is down
http://openstudy.com/groups/mit+6.0+intro+computer+science+%28ocw%29