1) The document provides instructions for setting up a 3D printer for beginners using an Ender 3 Pro printer. It outlines the steps of purchase, assembly, creating 3D models, slicing files, printer setup, the printing process, and completion.
2) The assembly section notes it can be troublesome but provides YouTube links to help with the process.
3) Settings like temperature, layer size, and calibration of the distance between the nozzle and print bed are described in the printer setup section.