dev.minetest.net
Modding API reference of latest GitHub master (your Minetest might be older than this; check the “history” button in there for older versions.)
Modding API reference of latest stable
You can find your current version of the modding API reference locally, depending on the version, in:
Code: Select all
Earlier: mods/default/init.lua
0.4.dev-20120318: share/server/games/mesetint/mods/default/init.lua
0.4.dev-20120320: games/mesetint/mods/default/init.lua
Later: doc/lua_api.txt
0.4.x: doc/lua_api.txt
World format specification also exists, if somebody needs it.
Community
Jeija's tutorial
And of course, you should take a look at everybody else's mods.
Let me know if there exists other quality tutorials or index pages.