Okay, so I haven't done a ton of studying for the GMAT yet. But, I did order two books to get started: the Official Guide for GMAT Review, 11th Edition (got a new copy for $10 here). This thing is the bible of GMAT preparation, they say. I also bought Kaplan GMAT 2008 Premier Program (bought at Amazon). After going through those two books I will see where I stand, and maybe buy some more if needed.
The books have arrived... Now, it's time to actually crack them open. :-)
I have casually started researching schools. I'll probably attend the local MBA Tour event and school events when they come to town, but by then I will hopefully have my top 4-5 schools nailed down.