Take Control of Screen Sharing in Lion by Glenn Fleishman from TidBITS Publishing, Inc is a comprehensive book about the technology and art of Screen Sharing in OSX Lion. It’s the book to read if you want to learn the ropes of screen sharing in OSX Lion.
Fleishman leads readers through the basics of screen sharing through screen sharing with iChat (good coverage just too bad iChat is going away); sharing via BonJour; sharing via direct network connection; sharing via Back to My Mac; and sharing via Skype. The steps are all very detailed in each section. However, I would have liked the book to be a bit more generous with screen captures for the more novice Mac users reading this book.