WWW = Wally's Wonderful Webcast
Yeah corny title I know, but good friend Wally McClure has done a webcast (http://www.wrox.com/WileyCDA/Section/id-292013.html) on Atlas which you may want to check out. It covers quite a bit of ground and goes further than a lot of the current webcasts which cover the simpler aspects of Atlas.
Plus he threatened to call me everyday if I dont post a link to his webcast :-)
Just kidding, check it out. Lots of good information.