I suck at Git/Github and need to get a lot better. I asked for resources a while back and here's what people came back to me with:

Roundups

• Learn Git by Kevin Suttle
• Top 10 Git Tutorials for Beginners

Walkthroughs

• Git, the Simple Guide
• Git SCM
• Gitimmersion
• Github's help documents
• Let's suck at Github together by +Chris Coyier
• Git for Designers
• Think Like a Git
• On the Path Gitflow
• Learn Git Branching

Jonathan Stark released a video that does an amazing job explaining how to deploy a site with Git/Github. I'm making special mention of it here because it's the one video where I didn't get lost. Check it out:

Books/eBooks

• Pro Git
• Git from the Ground Up
• Getting Good With Git

References

• Gitref
• Github's help documents

Articles

• A Successful Git Branching Model
• Exploring HTML Prototypes with Git
• GitHub Fundamentals

Tools/Clients

• Git Tower
• Git Box
• Github for Mac
• Github for Windows
• SourceTree
• Deploy Button
• FTPloy
• Ungit

Training

• Online Github Training https://github.com/training/free

What other Git/github resources do you find valuable? Let me know and I'll update the post accordingly.