Ok, I guess to answer the questions...
I would say that if you want MILK, you should buy milk (dairy) goats. That doesn't mean they have to come with papers or even be purebred (some of the *best* milkers are mixed-just ask Miss Prissy), but it does mean that they should come from or be mixed with one of the dairy breeds- Aplines, Saanans, Toggenburgs, Oberhaslies, La Manchas, Nubians, Sables, or Nigerian Dwarves.
If you just want goats, and don't want the milk, or don't care about the quantity you get, any goat will work fine for you. I don't really see the problem with getting bred does, you have to learn sometime, everyone does. Makes no difference whether it's now or a year from now, the learning curve is steep once you're in the middle of it.
Just make sure it's something you are willing to commit time and money to, raising goats does cost money. In fencing, feed, and quality hay. You will need a good quality alfalfa to get good milk, and a grain ration to maintain body weight during lactation.
Goats that are mature, dry and not bred maintain weight very well with mediocre quality hay (love ruminants), but bred does, bucks in rut, lactating animals, and growing animals need good quality hay and in most cases some kind of grain supplement.
One last word of advise- goats are addictive! Maybe even worse than chickens. I started with one around 14 years ago, and now I vary between 20 and 50 animals (depending on how many babies I have at any given time). And they can cost a LOT to feed when you start getting that many.