Aloha Mike and Welcome aboard!
Oh, to be 59 again!
Did you say whether you're going to become a sailor or powerboat
skipper?
Best thing to do is take some basic courses to get you started and I see that you've signed up for a good one. Coast Guard Aux. has a pretty good sail course but you'll have to supplement it with a basic on the
water course from US Sailing or
ASA to get you sailing right.
Good luck in your pursuit.
Regards,