Ultra64.ca - The Ultimate Resource for anything related to N64 Development (Official Docs, Software, Tools, etc). N64.Dev - A gargantuan list of N64 development resources, toolchains, and other things to get you started developing on the Nintendo 64. N64 Discord Server Check out our friends on this Discord as well! Related Subs & Links:
Retro Gaming Network Discord Server Discord server for the entire Retro Gaming Network. N64brew Discord Server - Discord Server For Developing N64 Homebrew Applications - both Hardware & Software.
This ranges in anything from collections, questions, good finds, pictures, video games, videos, run-throughs, and anything imaginable, just as long as it is Nintendo 64 related. The sub-reddit for all things Nintendo 64.