The OGRE Book and the OGRE Scenario book and the new PDF version of the OGRE Miniature rules. Looks pretty nifty; and I should note that iPads are really nice when it comes to reading PDF versions of something. The slightly smaller screen is (in my opinion) more than made up for by the increased portability; I like laptops and netbooks, but they kind of need flat surfaces.
…Anyway, that’s what I’ve been doing for the last couple of hours. That, and wishing that it was May so I could get The Big Box Of OGRE.