What version of Windows did you upgrade from?
I have had a hunt round the web and it seems there is no easy way to revert to an earlier version of Windows once you have upgraded to W8.
However your computer may have a "restore to factory settings" option so you MAY be able to revert to the status the PC was when you bought it (unless the W8 upgrade has removed it).
However as a matter of urgency I would first backup ALL your personal files on to an external hard drive, memory stick, CD/DVD, or to the cloud.
Because if you are going to start changing Windows versions you may lose everything.
The other simpler option is to stick with Windows 8 and install a small program that makes W8 look and work like W7.
One free program that does this is called Classic Shell and you can download it here
http://www.classicshell.net/
p.s. I think Windows 8 is awful and I am not surprised you are having trouble finding your way around it. Hopefully the next release of Windows will sort out some of these problems.