5 stars! I just finished this and really enjoyed it. This is turning into a very excellent stairway Solomon and I can't wait to read the rest of the "levels". I also like how you included the additional resources again - (as you did in the first stairway.)
One technical note: your link to .Net languages is broke: http://www.dotnetlanguages.net/DNL/Resources.aspx.
-- Itzik Ben-Gan 2001