Good news, it’s all been well documented on the forum!
Here’s a guide to jig workflows, #23 (Also good to look at #15 about camera alignment, but I suspect you know most of what’s there) in the FAQ:
Then there’s the GF tray boots, to really lock your crumb tray in position (useful for getting that last 0.01"-0.03" of accuracy):
Then there are reusable jig discussions, @eflyguy is particularly fond of reusable corner jigging, which essentially creates a reproduceable 0,0:
Heck you can see here that eflyguy prefers them to snapmarks, and for good reason. The snapmark process takes time to scan and align, that’s all already done with a solid jig workflow.
Combining the techniques, tooling, and discussion here and you’ve got a machine with a dead simple 0,0 that you don’t have to verify every time you fire it up.
It’s all here if you have the time to research. That’s a big if these days – everyone’s busy – but luckily the community is here to help each other out.