Clownfish4life...to answer a few of your questions...
Lighting is a major issue. You need about 8 watts of VHO lights per gallon of tank water. Or more, depending on the kinds of things you want in your tank. It's a preference, really whether you want VHO, PCs or MH. Just research it, and you'll understand a little better.
Secondly, you won't need an actual filter, if you get enough live rock, and use live sand as your substrate. Plenty of information on this here on this board if you need it. A skimmer is a great idea. Get one that is double the size needed for your tank. For example, if you have a 20 gallon tank, get one that is for a 40 or higher.
As far as test kits go, the Salifert test kits are pretty easy, and accurate.
Keep one thing in mind. You would think smaller tanks are easier to start with being a beginner. The opposite is true. Smaller tanks, less that 20 gallons, are called nano tanks, and require a good bit of attention. You will have better water conditions, and more room for error in a tank of at least 55 gallons. That way, if something goes wrong...which often happens...you have a better chance of saving your system. Good luck, and welcome to the boards. Here's a link you may want to check out.
http://www.simplifiedreefkeeping.com/faq/faq.htm
Hope this helps