I resigned and studied at home for couple months, I self-studied from MIT OCW to MOOC. Recently I found this article is a good summary for MOOC resource (in Mandarin) that you could evaluate, depend on your willing and passion.

MOOC不止可汗學院、Coursera和edX：更多大規模開放在線課程介紹

If you’re heavy coder, I believe you will like colorgcc, this tiny script saves your time on digging comlilation errors and warnings.