I think the venerable TU has moved along, having left a robust legacy of AVRT discussion and knowledge. Follow Received's instructions and you will have all you need. A belief that you need more than the crash course, or more than the book, seems to me to be, well, you know.
Instead, join one of the existing threads or maybe even start your own. Wait, you've done that already. What would you like to talk about? Operators are standing by.