I don't know if they make one( if they do it is probably both php and sql), but if they do then sams teach yourself in 24 hours are good books to start. Or the for dummies series. Once you have read one of the sql books then another good resource to have is o'reily's pocketguide for sql that way you will have a short reference when you need to know something that you forgot (o'reily has an ok book on sql).