I’m sure you’ve seen me say it a few times, but really, leave the endstops out of it for a while. There is plenty to learn without dealing with endstops. It is extremely easy to position this machine by hand to exactly where you want it to start.
Physically move the machine to exactly where you want 0,0,0 and hit start. If you use endstops you need to worry about moving them for every single thing you do. Endstops are only efficient if you are doing multiple parts, or only ever doing one task (printing), z touch plate is useful for multiple bits in milling but does nothing for printing.