It all depends on how much you want to learn. Yes, all the information already exists on the web somewhere. For $35, those speakers will be an improvement over the stockers and probably a good place to start. If you can handle this install, you can later upgrade and won't be throwing away a lot of $$$ worth of stuff. If you decide to, I have my tweeteres mounted
here. At first, they were just stuck on with velcro, but later and in that picture, I cut holes in that plastic peice for a flush mount.
Ohm is the unit of measure of resistence. Voltage = current times resistance (V=IR). A speaker is just a resister in an electrical system. So, each one is rated with it's resistance. The lower the resistance, the higher the current for any given voltage, thus harder for an amp to drive.
