Dr. Jack Newman! There used to be a better page for him, but all I can find is this, http://www.breastfeedingonline.com/newman.shtml. He's also a great one to look up on youtube for very close-up videos of correct latching and positioning. He also has an ointment that you can have made at an apothecary that literally made night and day difference for us once my nipples got destroyed by our first two weeks!
For parenting (but especially great on the cosleeping info)-
The Natural Child Project. http://www.naturalchild.org/
And, anyone who's interested in some great birth info...a little more do-it-yourself than most sites, but probably still lots of info for anyone planning any sort of birth, Unhindered Living's online childbirth class, http://www.unhinderedliving.com/childbirth.html.