Man...where do I start? The first thing I would do is buy whatever books you'll need.I went to the library and checked out books at first,but I went and bought them later. I found myself re-reading sections of the books and it helped having them at home,whenever I needed them.

If your plan is mostly waterfowl,get the book "Water Dog" by Richard Wolters. It was the book I found most helpful,and a couple friends have used the book since. It's also on video.
He also has a book called "Gun Dog" if your interested in upland training.

I "cross trained" my dog for both waterfowl and upland hunting,she is mainly a duck dog,but hunts pheasants very well also.

The next thing I would do is to join "Ducks Unlimited". The basic membership is $25 per year,the best part is you also get their magazine. There is a section dedicated for all sorts of waterfowl related issues,from shotguns to dog training to product reviews and recipes.
Another great magazine is called "Wildfowl" it's dedicated to duck and goose hunting,I've learned alot from reading it.

Your vet can probably point you to a labrador club,in your area.They are usually full of info and training tips. If you have any other questions E-mail me anytime.