There is some subset of all VCS software that contains the handful of commands that 80% of coders need 80% of the time. Conceptually, these commands are very nearly isomorphic for individuals making changes to files by themselves.

These paragraphs do indeed cover those commands for git, although I can't see why this presentation is particularly useful, even for a beginner. It's just a condensed HOWTO that doesn't actually explain what it's doing.

Newcomers would be better advised to sacrifice the 30 minutes and read the first three chapters of the storied git book: http://git-scm.com/book/en/v2.