really, just read the FAQ. its got most of what you could want, with the exception of post-60 stuff (which youll probably be able to figure out on your own by the time you get to 60, and if not, we're always still here).
non-FAQ general advice i can give you is that feral is the "easiest" leveling in terms of finding the gear and getting into the groove, but no spec is bad for leveling. resto will let you solo a LOT of hard stuff, and balance is a different flavor of leveling, if not quite as efficient or easy to gear as feral.