documentation
The official references. Bookmark these - you will live in them.
primary
Luau Language Reference
Official Luau docs - types, syntax, every feature explained by the people who built it.
api
Roblox Engine API
Every Instance, every property, every method. The canonical source for anything Roblox-specific.
guides
Roblox Creator Docs
Tutorials, monetization guides, marketplace rules, performance docs.
try
Luau Playground
Run Luau in your browser. Paste anything from a lesson and see what it does.
style
Roblox Lua Style Guide
How they want you to write code. Read this before you apply to any studio.
community
Roblox DevForum
When you're stuck, search here first. Then ask. Most things have been asked.
tooling
Rojo
Sync code from your file system into Roblox Studio. Required for serious projects.
framework
Knit (game framework)
Service/controller framework. Common in commercial games.
data
ProfileService
The data-saving library most production games use instead of raw DataStores.
Need something not on this list? Tell me on Discord and I'll add it.