"My favorite reference is the Commodore 64 Programmer's Reference Guide."
The bible. I dug my copy out of the basement last night. It's about 19 years old, and thoroughly dog eared and full of my old notes. The cover is off, but otherwise it's intact. Ah, the memories.
I was hoping to find some more detailed examples of annotated assembly code like this (which tends to be too advanced for me):
or this (which is incomplete, but what is there is good basic stuff):
http://user.tninet.se/~uxm165t/demo_pro ... _prog.html
If you see anything interesting, let me know!