A.

There are numerous types of Linux operating systems out there, some easier to use than others and some requiring more tech savvy users than others.  We recommend https://system76.com/ if you want to purchase a computer with a friendly version of Linux, Pop!_OS, pre-installed.  If you’re looking to for a Linux-based OS for use with other hardware, that can be a bit more challenging to ensure hardware components all function properly, but Pop!_OS is available for download for use with your own hardware as well. Another good option may be Ubuntu (Desktop), also freely available and well regarded for download and installation.