I have recently taken up 3d printing, and Ender 3 pro if you were curious. And it has been an interesting ride that's for sure. It came in a box, somewhat half-assembled kind of like Ikea flat-pack furniture. The instructions like those drawings; bird image where you're given a circle as step one, and then a highly realistic image of a bird as the last drawing. This was my first print; both are the same file; just one twin is a bit shorter than the other one.
My tip of the day would be to make sure things are square, 90 degree angles people. Also; both the z-axis rod needs to be straight otherwise things shrink.