Here are a few interesting things I've read lately:
Nursing Reality Shock: The New Nurse Survival Guide
This one came from monster.com and suits me quite well, as a second career nurse.
Allnursingprograms.com offers a good FAQ on nursing as a second career. They also have detailed information on different types of nursing programs and what is involved in each.
DiscoverNursing.com offers a lot of information on different fields within nursing.