I came across this sight today, and I'm planning on digging deeper over the next while, but I wanted to let you know about it. It's called the Personal MBA, or PMBA. It is basically an online reading list along with an accompanying message forum. It looks like a great place to learn more, read great books, and discuss them with others.
Business Week wrote an article about it, and you can read that HERE.
You can also go directly to the site and read more about it HERE. The site is free although they do offer coaching and consulting for a fee.