This tutorial is for developers with a broad but not necessarily deep background in web development who are interested in building Facebook web applications. Although Facebook Desktop and Mobile apps are covered where applicable, the content of this book is about straight web applications. Material covered includes how to plan an app, API details and FQL calls, and how to market and attract users, so there should be something for all participants in Facebook app development. Facebook Q & A
The author assumes you already know your way around web development in the areas of HTML, CSS, PHP programming, and SQL/database design. You don’t need to be an expert with any of them, and the author makes suggestions on good books on all of the supporting technologies.
More information at Facebook Cookbook: Building Applications to Grow Your Facebook Empire