Ah, a fan of the games, I assume. That's how I got my start in Discworld, but the first novel I read was Small Gods, and I read a few of the others that were out around that time. Soul Music I read early on, and the one that had just been published... Men at Arms, I think. Also Witches Abroad. Then I kept collecting them as they came out and buying the old ones I'd seen on the store shelves as I found them. (I tried to order them all once and only got about half of the ones I was missing. But I did eventually find them all.) Rincewind is a nifty character, but Death is much more fun. The one big scene he had in Maskerade was the best part of the book.