Or just report your post and ask a mod to move your thread there, or skip the reporting and just ask one of the mods to move it for you through a PM or on the actual post, they're usually around.
That said, I know you say you don't know much, but you say you upgrade it over time, so I'd imagine you at least know something. I'd recommend buying your own parts, it's glorified legos, at best, and you'll get more for your dollar. Look up a video on how to build a computer and see if you still think you can't do it yourself.
https://www.youtube.com/watch?v=lPIXAtNGGCw 3 parts, the actual building part is part 2.