New language

Alright so i'm not a professional coder but i tought i'd start learning Java.
So now my question to /prog/ is: does anybody know any good places i can start learning Java? Like good PDF's or sites?
And what is the best compiler according to you?

>>17
No, my definition is "does this program require external software? is it standalone?"
Computers run native code programs, and some of them are:
Emulators run binary images of different system arch,non-native code
Virtual Machines run binary images of interpreted (abstract arch) non-native code