Picking the basic parts that comprise a water-cooler is something you should learn from basic research. During this process you'll also learn the bits you need to make the process easier in the long run. It'll also be easier to offer advice once you get the basics down:
1. You won't go wrong with a TDX. It's one of the best mass-produced blocks out right now. Lucite or brass is pretty much a matter of how you want the finished product to look. I went with Lucite.
2. Rad or core? That's a subject with lots of good reasons for both options. I decided on a rad because it looked better in my case and was designed for the environment in which it was going to be used. I'm sure someone who prefers cores will be glad to offer their reasons. If not I'll offer my thoughts on them as well.

Rads are more expensive. As to which is better, I've yet to see a comparative study. You can find the numbers on rads at DD.
3. Pump? I went with the D4 because it's cool running, gives off very little EMI, is small but powerfu and again was designed for its intended use. Eheim pumps are quality, I used them for years with marine tanks, but I didn't want to try an shoe-horn one of those big, hot things into my case.
4. Part of your initial study will make you aware of the other plumbing options like fill-and-bleed and T-line configurations. Look at all of them before settling on what you want to use. All have pros and cons. As an aside, DD has new res's that aren't held together by glue. If you go res, I suggest one of those.
Where should you start to acquire some basic knowledge? Start
HERE. Overclockers' FAQ's were very useful to me when I was getting started. If you have any more questions or need clarifications just ask.