#Intro Git is...

...a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.

Git is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.

That's a lot of 'means nothing to me' terms. Best to start with the below video Git for ages 4 and up.

#Getting started - Atlassian's online guide - Multi-faceted learning resource - eGit's wiki - User guide for Eclipse/RDi tooling - Git's ebook - Pro Git (v2, with multiple translations available)

#Videos - Git for ages 4 and up - IBM i and Git and Pull Requests