Ah, wow, I did not realize there were so many, but that is helpful. Thank you! I am not sure in what direction to go after OW/AOW. I think as I get more experience, I will learn better and have a better sense of what I want or need.
Do classes like fish ID count? I would think not--but they won't hurt, either!
Yes unfortunately. But I wouldn't take something like that for a master diver card. And you can search here to find out a lot of us don't like that it can count towards master. If you are wanting a master card take courses that will genuinely increase your diving knowledge.
Intro to tech
Nav
Deep
Wreck
Cavern
Dry suit
Things like that. It's your dime, but there are a lot of courses you can take to get a solid foundation without taking courses just to take them.