I had zero computer skills, and I built my own just fine. There is a ton of online documentation you can google search for, as well as support forums.
Regardless what people say, building your own is a much better and cheaper option. People have shown me great sales, and I've always been able to show them the exact same system specs cheaper through wholesalers. Additionally, you can upgrade as you go, which saves you money. When CPU prices come down, you buy a new one rather than a whole system at once.