What is the “Xplotter,” where do I get it, and do I need it now, while I am just getting set up?
If you are plotting for mining, then you would need it to prepare your disks for mining.
I suggest trying out engraver instead of xplotter -
Download here - https://github.com/PoC-Consortium/engraver/releases
Guide / Wiki here - https://github.com/PoC-Consortium/engraver/wiki