Having gone through this myself not too long ago, I'll chime and say that used gear is usually the best way to go when you're just starting out. No reason to break the bank until you know what/how you like to ride, what brand of boots fits you the best, etc.
There are two caveats to that general truism though: Caveat 1. Some binding models don't hold up well over time, or never worked well, so you have to be careful there. Some outdated boots also might not do you any favors. And it goes without saying, stay away from equipment that's obviously been abused or has cracks. Caveat 2. There are some who will argue that having a newer board that contains titanal or "metal"--one of the biggest leaps in alpine technology in recent history--is as big an advantage for beginners as it is for more seasoned riders. Why? Well, metal boards tend to get "upset" less with variations in the snow and stay in a carve. They will cost you more though, and can be more delicate. And don't automatically equate metal boards with "easy." They come in all flavors. I've been on older fiberglass boards that were much easier for me to carve than some modern raceboards.
Although the site is a little old, it does give a good introduction to the brands: http://www.alpinecarving.com/