Sub/Amp Wiring Tips

I am kinda new to all things diy in a vehicle and my 98' is my entrance to that.
I have a 600w amp and am looking to pick up some subs soon. I want to throw them in the back, like everyone else, but I would like to plan out what I am doing before I do it, y'know. So anyone got any good links to a tutorial, or some tips from your own install, anything is appreciated, thanks!

What else should I add while I am at stock sound?

 

Check out 5star stereo on youtube. Lot's of helpful install videos, tips/tricks, and their tools of the trade to help with installation. I've upgraded my install skills over the years from watching their videos and have redone my stereo setup in my Tacoma and just recently started on the 4runner. I recently sound deaden all 4 doors, new components up front, coaxiels in the rear, new headunit with front/rear cameras. A 5 channel amp/sub is planned down the road.