garitrigura

Is there any guide/map on the location of the refferance for gui, items, blocks etc.?

I'm familiar with programing specifically in java so that's not a problem. Sorry if it's a dumb question but where can i find the vanilla minecraft sources and from there where should i look to see for example a gui?

I am new at modding. And it is very hard to find specific tutorial for everything. Is there a place where i can find the information at once?