I found a great place to start with lua is roblox studio and if you really wanted to go in depth there is a book on coding in lua 4th edition i think, guarunteed to keep you occupied
And as im sure your starting to notice already, DU is a very lively community and it is great to get involved in all the discord channels and forums.
There is some great youtube stuff on all the politics and game features by a few organisations and also some very good reading material in the forums by people like @Lethys, @yamamushi, @Cybrex, @Lord_Void etc. etc
I probably shouldnt have started listing people but meh. sorry to the hundreds of others i also should have listed