Mad Men for beginners - what you need to know if watching for the first time

Spoiler warning this information is intended for viewers beginning series 3.

http://www.nydailynews.com/entertainment/tv/2009/08/12/2009-08-12_mad_men_for_beginners_heres_what_you_need_to_know_if_youre_tuning_in_for_the_fir.html