Hi guys! Any of you have any links to sites discussing car audio setup 101? I've been reading threads posted here and i can't seem to keep up...i.e. what's seps and its difference to normal speakers, how to choose an amplifier, do i need a subwoofer, what head unit is good(of course depending on price), and most importantly how to interconnect all of these, and connect to the car itself, without affecting its electrical load(or something like that)...ala DIY.
Easy way would be to have a friendly neighborhood shop do all these... but i'd really love a DIY type of stuff when it comes to this..

Any advise/comments/suggestions would be much appreciated..