Get a copy of "Allen & Mike's Really Cool Backcountry Ski Book." It is not just for skiers and is full of simple, easy to understand winter camping tips and is illustrated. It looks like a comic book, but don't be fooled-these guys know what they are talking about.

For more serious fare, read "Hypothermia-Death By Exposure" by Dr. William Forgey.

Go back through this forum and the Trip reports forum and read the various trip reports-I have several posted.

Read a couple of years' worth of posts as well about winter camping.

If you have any particular questions, be specific. A general "what should I do or take?" question is pretty useless.