The above link appears a little to complicated for a beginner.

However, there is lots of information out there. Since you are after really basic material, you might want to start here:

http://www.crutchfieldadvisor.com/S-...ion_guide.html
http://www.crutchfieldadvisor.com/S-...ion_guide.html


My personal advise would be, if you are asking very general questions such how do I install XX, then it would be easier/less timely (potentially less costly) to simply pay someone to do it for you. Most install shops also include a warrenty if things break down/dont work and you dont have worry about blowing anything up accidently.