I have been learning to use Git. The following is a list of resources I found to be useful, interesting, or that I want to explore further as I get into Git:
Website: Git – Fast Version Control System – The home of Git. When you think source code management it’s only natural to picture a monster eating trees.
Book: Book – Pro Git – by Scott Chacon – Concise coverage of using Git. You can purchase the book or read the whole book online.
Book: Safari Books Online: Version Control with Git, 1st Edition
Tool: msysgit – Run Git on Windows from a specialized BASH prompt.
[Update 2010-07-03: Changed the order of the list so the resources I have used the most are above this note.]
Website: GitHub – Secure Git hosting and collaborative development
Video: Webcast: Git in One Hour – Scott Chacon shows a lot of what he covers in his book in this screencast.
Video: James Gregory on Git – James Gregory does a screencast on Git as well.
Website: git ready – learn git one commit at a time
Article: An introduction to git-svn for Subversion/SVK users and deserters
Article: scie.nti.st – Hosting Git repositories, The Easy (and Secure) Way – Gitosis.
Article: Deploying A Web Application with Git and FTP – Rob Conery shows one way he uses Git.
Article: Git For Windows Developers – Git Series – Part 1 – Jason Meridth – Los Techies – Describes using msysgit.
Article: Branch-Per-Feature – How I Manage Subversion With Git Branches – Los Techies
Article: Git's guts: Branches, HEAD, and fast-forwards – James Gregory's Blog – Los Techies
Article: Martin Fowler – Version Control Tools – Not about Git specifically.
Article: ReinH – A Git Workflow for Agile Teams
Article: Jer on Rails – My Git Workflow
Article: JustinFrench.com – Git Aliases Rock
Article: GitHub – Guides – Put your git branch name in your shell prompt
Article: A Note About Git Commit Messages | tpope.net
Article/Tool: Michael Bien's Weblog – NetBeans GIT support – I have not tried the NBGit plugin yet but I have been playing with NetBeans a bit.
Podcast: Hanselminutes Podcast 108 – Exploring Distributed Source Control with Git
Tool: tortoisegit – Maybe like TortoiseSVN. I have not tried it.
Tool: EGit – Git plugin for Eclipse. I have not tried it.