The legislative process

LexisNexis Congressional has a great series that summarizes the legislative process. These are the ones I found most helpful:

Committee action, hearings, and markup:
http://www.lexisnexis.com/help/cu/CU.htm#the_legislative_process/stage_3.htm

Floor action:
http://www.lexisnexis.com/help/cu/CU.htm#the_legislative_process/stage_5.htm

Resolving differences between House & Senate versions:
http://www.lexisnexis.com/help/cu/CU.htm#the_legislative_process/stage_6.htm