How to set caster?

Ahhh.... I'm starting to get it :) I've been reading a bit about this and the issues that members seem to have after taking their cars in for alignments, like driving off with an even worse alignment situation (car being set to stock specs). Looks like I'll be doing some more digging and then tackle it myself LOL

I assume Caster (like camber and toe) needs to be set with the car on a level service and wheels pointed straight ahead correct? Makes it for a tight squeeze trying to adjust those cam bolts...
I would get the Camber & Toe sorted first. Then Check Caster. Caster most times is in spec or very close after setting Camber & Toe. I would still spend the extra $$ and get it on a good Alignment machine. JMO