Not sure where to start with lua.

I want to learn Lua and I know a little bit some scripting base in Lua but I have learned all by my self.

I want to understand this script but I don’t know where to find exactly in http://wiki.garrysmod.com/

The thing I don’t understand is the table and the fadein in :

http://luabin.foszor.com/code/gamemodes/base/gamemode/cl_hudpickup.lua#top

nevermind

Thanks

Derma also.