I agree 100% with what Rob says.
I bought an Anet A8, it came in a box in a gazillion pieces, I'm from an engineering background & it took me 8 hours from opening the box to starting to print my first object.
I could see that it may be off putting to a lot of people...
The Creality CR-10 is a different kettle of fish altogether, it comes in 3 (yes three) parts, bolt 2 together, plug the other one in & your good to go!
The other plus of the CR-10 is it is available in lots of different print volumes up to a whopping 500mm x 500mm x 500mm, the big one is more expensive but I've got to get me one of those!!!
I don't have any CAD ability, I'm definitely going to have to learn, but, in the meantime there are thousands of free models on Thingiverse & many other sites out there.
I simple terms, you're going to need a "slicer" programme, there are quite a few around, just about everyone you talk to will recommend a different one, Cura is supposed to be good but is a bit too bells & whistles (read complicated) for me, I've ended up using Slic3r, yep Slic3r, it's quite simple in comparison to the others I've seen.
Now here's a novel idea, you haven't got a 3D printer yet, no probs, download your slicer programme of choice & have a play at manipulating 3D models in it, you can scale them, cut them into bits so they will be a more manageable size, you can mess with different amounts of infill & variations with support material, best thing is you can see the effects of the changes you've made.
Just remember that you are not limited by the size of the .STL model you download, if you have a look at the 1/16 Hanomag I've been printing, that was a 1/200 model that I increased the scale of.
Just have a play & ask for advice if you get stuck

Cheers
Wayne
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