SNES / GBA / C coding Resources

Excluding what is already in the Resources page, I think the following are worth of mention for GBA, from a first view:

Wiki links: GBA Documentation

• Setting up a GBA development Environment (DevKitARM, videos and PDF)
  
• GBA Dev Forum
  
• A beginner FAQ
  
• ARM Class
  
• ARM Tutorial
  
• CowBite Virtual Hardware Specifications
  
• Dev'rs GBA Dev FAQs
  
• gbajunkie.co.uk tutorials
  
• Tonc (PDF)
  
• Tonc References
  
• GBA Audio
  
• armips assembler
  

Stuff on GitHub:

• Java Library for ROM hacking Tools
  
• Game Boy Advance Bare Metal Assembly Programming
  
• C# Library for GBA ROMs
  
• GBA Tutorial
  
• GBA C wrapper functions
  
• Shitfaced Clowns' source code for GBA demos
  

C coding (general, not GBA specific but useful nonetheless):

• Hub4Tech C Tutorials
  
• cprogramming.com C Tutorials
  
• C on Rosetta Code
  
• C Programming Notes
  

As for books, there is the GBA Programming Manual and Programming the Nintendo GBA : The Unofficial Guide that you can find a PDF online. Annotations are made here.

As for C programming, a general consensus point out to a few books, C Programming: A Modern Approach and Pointers on C are examples of good books aimed more at beginners. They can be found online. You can also check a book list here and this thread for recommendation. I suggest you to stay away from video tutorials in general. If anything, you can send me a message. (I'm looking at you James!)