Google is hosting a series of free Webinars for new AdSense publishers. The orientation webinar seemed to go well, so why not join the next webinar?
The next webinar is on May 7, 2009 at 6.30pm (PST). It is on the topic of implementation and optimization:
Learn how to work with your ads and experiment with different formats, colors, etc. to maximize your performance.
Google can support up to 500 publishers on the webinar, so make sure to sign up quickly if you want to join. You can sign up over here for the second webinar.
Forum discussion at Google AdSense Help.