Get baldurs gate(all of) and planescape:torment and thatll see you through till Neverwinter.
Trying to get into modding the infinity engine at this stage is probably not worth it, since NWN includes tools and such out the box.
But if you insist go to
www.teambg.com. And while im here i might mention that BG2 is the most popular base for mods. Not that theres anything against IWD, but the tools and knowledge base will probably be more oriented to BG2.