Watch the amazing Locus juggle several books at once, and try not to drop any! Free admission.
Definitely House of Leaves. In fact, that one might be my early start book. I heard about it on a podcast about a year ago, and bought it immediately (in paper, since that was one of the recommendations). And, as happens with many books, I never got around to it. So now it's first on my list! My edition is the "remastered" one (whatever that means in terms of books), and looks gorgeous.