I just got all the equipment needed to start my sound system installation but I need some info. When hooking up the power wire, how do I attach the power wire to the battery? Is there some sort of connector I have to buy to do this? Also, what do I use to connect the speaker wire to my amp and my one JL subwoofer? Does anyone have pictures of the connections? Thanks.

Lot's of people have pictures but I am not one of them today. JL audio has a great set of tutorials. Go there. Speaker wires are pretty easy Positive to positive, negative to negative, unless you prefer an out of phase sound quality. You can play with this to get a lot of different effects such as adding spaciousness.