Windows has a default 3d viewer nowadays that should work fine. Just double click on any file you download and see if that pops up.Yeah, Blender may be off the cards for me because I've tried it before and there's a lot going on. I have a MacBook so it there something similar on there?
Blender is good. Lots of tutorials out there. If you have no 3d experience though it'll take a lot of effort.