Use this place as your resource as it's going to have up-to-the-minute information.
Another thing, consider coming to the WebmasterWorld conferences where you can meet with these guys and learn specifics of interest to you and your business.
There are a bunch of people who'd love to help you without padding their pockets. Besides, I think learning by doing (how I started out) is worth more than 100 training books put together. Save your money and do it yourself whilst checking on here periodically.