I've swapped out my head unit, door speakers and rear speakers all by myself with minimal instruction and I know little to nothing about it when I started. Start with the door speakers. It's pretty simple, remove the plugs in the door near the handle, use a torx screwdriver to remove the two screws holding the door on, use a flathead screw driver to remove the window switch panel and unplug it then pull off the door trim. Use I believe a 1/4" socket to remove the old speaker, snip the wires holding it on and soder in the new one.
