Spent a while flipping through PDF Hacks in the bookstore last night (procrastinating on packing), and it looked solid. If I was going to be hacking on PDFs and ebooks, I’d pick it up, even if some of the hacks felt a bit, um, hackish, and showed a Windows bent.

Still to save you time, I can boil down well over the half the book into 2 words: use pdftk.