I found this on YouTube looking for your machine. Maybe you've found it too. It looked like a review but the guy goes through quite a few of the ins and outs. It's a TOS 100A but the only real difference is the travel of the cross slide.
https://youtu.be/jM0l3HLChG8?si=5NE9NH-Wo6tmdj0Q
As for how to make money with it, I would imagine construction equipment repair would be a nice entry. Like the kind of work Curtis at Cutting Edge Engineering does.
Wish I could help you with first-hand experience but I have none. GL!