With so many great dive sites, spread around dozens of islands, it can be difficult deciding where to go. You can check out one of these guides for advice. Just remember that a guide book is no substitution for a knowledgable local diver once you get there. Among the guides available, Diving in Malaysia by Dr. Kurt Svrcula is the most impressive in its completeness. It not only has detailed descriptions of each dive site, but reviews of dive operators and liveaboard boats.