Welcome to our obsession!
And, to throw a monkey wrench into your quest, for your questions, I'll answer: neither!
Many of us stopped using secondary fermenters a while back. I found that if I just put my beer in a sanitized fermenter (I use the "ale pail"), then in three weeks I can bottle it. I don't see a bit of difference between using a secondary or not. When I was a beginner, I religiously used the secondary. But I haven't in several years. Use the ale pail, and leave the beer in there for three weeks. Don't bother buying a carboy, unless you want to add some oak or something unusual to your beer.
The "secondary" should be more properly called a clearing vessel. In a professional brewery, it's called a bright tank. That's simply a new vessel for clearing and conditioning, not for fermenting. In homebreweries, many of us have found that that's just not necessary for clear and bright beer.
I personally have liked the Brewer's Best kits I've done. They have good recipes, good instructions, and a nice end product. The key is go get fresh ingredients- don't get a dusty Brewer's Best kit off the shelf at the store, if it's not a busy store. With a pretty fresh kit, you'll find that the Brewer's Best kits are just fine and make a nice beer!