Whew! Slow down Matt.... You've got the horse way ahead of the cart. Your goals are noble but it's going to take some doing to get from Point A to Point B.
As for tools, your best bet is to give The Smoky Mountain Woodcarvers or Little Shavers a call and tell them what you want to do and get their advice on what to buy. If I was you, even though I have aspirations to produce DiVinci type work, I'd start out slow with a very basic set. Both organizations sell starter sets.
As for wood, there again I'd start simple and make a couple of relief carvings first using an easy wood to work with such as basswood. You can order it over the net or stop by a carving store or if you live in an area of the country that has lumber yards and such you may even be able to pick up some cheap at a yard.
Finally, as to how to start I'd suggest reading the following post from Susan...
Levels in Relief Just another example of the generosity of the carvers on this forum and of the excellence of Woodcarving Illustrated to host such a fine website!
Just remember, we've all had to learn to crawl before we could walk..... that is unless you happen to be Michael Angelo incarnate! Ha! Ha! Good Luck!