When my son was crying all the time, my husband and I spent many nights in front of the computer looking for resources to help him. We googled colic, reflux, causes of crying, how to calm a crying baby, cure for colic, etc, etc. Usually one of us would be in the living room with Sammy, trying to calm him down, while the other was in the kitchen scouring the Internet.
It didn't take long before we knew more about the causes of crying than our doctors (this says more about our doctors' knowledge of 'colic' than about us!).
Below are some of the websites we found the most helpful.
Dr. SearsKellymomDr. Jack Newman Breastfeeding VideosPeriod of Purple CryingThe Fussy Baby NetworkPostpartum SupportThere must be more...which websites did/do you find helpful?