Haha, that's common, every time you open the Android Studio something ask to you too updated, and because my internet connection is so slow i usually skipped until i go to sleep.
Btw Github is a very good tool for keeping you opensource projects, but i also recommend an account in Bitbucket from Atlassian, because you can create free private repositories for those projects for the people that you select, and they have a very good tool for administrating your commits.
Have a good lesson and try to not drink to much coffee?