Read these two documents. That's all you need to get up to speed quickly.
Obama Presidential Eligibility - An Introductory Primer
Polarik's Final Report on the COLB forgery
Both of the links at BT post are excellent....The last one is Polarik with document analysis.
http://www.freerepublic.com/focus/f-chat/2295627/posts?q=1&;page=83