First stop, Allearsnet.com, The info on this site will quickly get you up to speed on all vacations Disney. Then, once you've got a little knowledge under your belt, start prowling the DIS boards, asking questions whenever you like. Also, pick up either the Passporter Guide or the Unofficial Guide book. They clarify and go into really great detail.
The funs just beginning for you. Don't stress out, as deals become available you can keep cancelling standing ressies until you get 45 days out.
Have fun!