Git: add vs push vs commit

Question

What is the difference between git add, push and commit?

Just a little confused coming from SVN, where \"update\" will \'add\'

Answer 1

I find this image very meaningful :

(from : Oliver Steele -My Git Workflow (2008) )

Answer 2

add tells git to start tracking a file.

commit commits your current changes on your local repository

push pushes you local repo upstream.