EggrollXpress61

Hey I was wondering if you guys think it would be a good idea to attempt to do the wiring for my computer in my car by myself? I have never done it before but am reseaching it for numerous hours and am currently reading books, websites, and anything I can get my hands on. Do you think it is good enough to attempt this wiring by myself? or should I get a professional? How much do they charge usually (ballpark range)? I want to be able to watch and learn because once you learn something it is yours forever and will be willing to put unlimited efforts into learning it. Thanks!