I'm in TX, so that's be a little far.
It came with instructions, although I'm not sure how informative they are. I just looked at what gauge wire it said I needed and tossed the instructions aside. Then I drove to Car Toys, bought the cables I needed, and installed it in the parking lot in case I ended up needing something else.
If you're going to hook it up to the factory head unit then you will have to install a line level converter. That, along with running the power cable from your battery, you might want to have it professionally installed.
It all depends on how much they're going to charge you. It's really not all that complicated, but I can see how it could be confusing to a first timer. Generally the worst thing you could screw up is blowing a fuse or two. Although I have seen someone set a car on fire with a bad install.. that's why you use fuses.
As long as you're not a dumb ass, and or drunk/stoned when you're trying to do it then you should be able to do it yourself. I started installing car stereos when I was 16.
If you decide you want to give it a shot I could walk you through the process.