Free Adobe AIR Book for HTML/JavaScript Developers (by Adobe)

http://onair.adobe.com/files/AIRforJSDevPocketGuide.pdf?sdid=CEYFA
This is a good book for those coming in from JavaScript/HTML and moving to AIR.
You don't have to use Flash to build Adobe AIR applications. You can build full-featured applications using just HTML and JavaScript. This usually surprises some developers who expect Adobe AIR to focus only on Flash.