VRChat
VRChat is the largest massively-multiplayer online virtual world platform (Wikipedia's term, not ours), with tens of thousands of daily users and wide headset support.
Unfortunately, their development team is reigned by one of the worst management and PR teams seen in modern times.
How Tos
I'm curating some articles with knowledge currently only contained in YouTube videos, on some god-forsaken Discord, or other secret-squirrel shit.
Modding
Warning: Modding is inexplicably against VRChat Terms of Service and they are rather bloodthirsty about it. You WILL be banned if they catch you, so don't be stupid and obvious about it.
- Modding VRChat (RIP)
Avatars
VRChat's docs are awful, so here's information on getting Avatars running.
- Avatar_Creation_Process
- Avatar_Hypertutorial - Designed to be the modern guide. Is a braindump of the avatar modification, configuration and upload process. Covers a lot.
- Avatar 3.0
- Add_outfit - Walkthrough of skills and techniques you can use to fit any kind of outfit or object to your avatar
- Parent Constraints
- Full Body Guide
- Scale Slider
Legacy Avatar
Note that Avatar 2.0 stuff is now legacy as VRC does not even allow uploads any more. Some of the information here is still relevant to newer avatar making but don't expect everything to work.