Building Social Web Applications: Establishing Community at the Heart of Your Site

Creating Facebook applications - 100 Success Secrets to creating Awesome Facebook Applications and leverage Social Media

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Designing Social Interfaces: Principles, Patterns, and Practices for Improving the User Experience

Developer's Guide to Social Programming: The Building Social Context Using Facebook, Google Friend Connect, and the Twitter API

Sams Teach Yourself Google Buzz in 10 Minutes

Facebook Cookbook: Building Applications to Grow Your Facebook Empire

FBML Essentials: Facebook Markup Language Fundamentals

Sams Teach Yourself the Twitter API in 24 Hours

Sams Teach Yourself Foursquare in 10 Minutes

Essential Facebook Development: Build Successful Applications for the Facebook Platform

Sams Teach Yourself Google Buzz in 10 Minutes