Lamaze
My mom used techniques she learned in her Lamaze childbirth class to give birth to myself and my three younger siblings, but today Lamaze International is also a fantastic resource for quality information regarding pregnancy, childbirth, and the newborn.
Lamaze.org
Lamaze has two web sources for information, Lamaze.org is for Parents, and Lamazeinternational.org is for Birth Professionals. I particularly like Lamaze International's blog, Science and Sensibility, for up to date information.
Some of my favorite articles include:
Lamaze Six Healthy Birth Practices
Epidurals Don't Slow Labor? The Devil is in the Details
Happy reading!