Hey FP, glad to hear you are giving swimming a shot. Here are some good links for freestyle form. You'll find that while the head up, flail mightily, kick like crazy method will get you from point A to B, it takes a lot of energy. As your form improves, you will use less energy and gulping for air will decrease.
http://wings.avkids.com/Book/Sports/...imming-01.html
Ideally, your body should remain as streamlined as possible while stroking as well as when breathing.
Here is a great article on technique and how to avoid injuries. It is different than what I learned as a competitive swimmer, but what is said makes sense to me and I have seen my share of the types of injuries discussed.
http://www.physsportsmed.com/issues/...03/johnson.htm
Good luck!
Just don't let this happen to you....