what is git?

[shefa101]

This question is in reference to Atlassian Documentation: Set up Git

What is git?

[Steffen Opel _Utoolity_]

You might want to read the appropriately named section What is Git within Atlassian's most excellent Getting Git Right guide, which also offers all sorts of additional information that should help you while discovering Git over time.

[Peter Geshev]

Have a look at git's site