Are you as excited as we are about the Olympics this weekend? We are especially looking forward to the events that combine multiple disciplines, such as athletics, modern pentathlon and triathlon. Not sure what goes on in those events?
No worries; we compiled a reference guide to bring you up to speed with each sport in the 2012 Olympic Games. And since for two weeks every four years we all like to become instant armchair experts of these events — offering our own commentary on every score, finish line and whistle blow, no matter how arcane the sport — this A-Z guide will pretty much make you the Bob Costas of your friends and family.