The AHA is running a promo right now. If you buy an AHA membership, they will also send a free book of your choosing from the following: How To Brew, Radical Brewing, Designing Great Beers.
All 3 of these books are excellent. How to Brew is a must have if he doesn't have it already.
Edit: and for future reference, the AHA rallies are the best places to renew. Great events and I believe it is cheaper.