Great info that sent me on a bunch of research. Thanks a ton!
Re. many other replies above... yes... I'm tracking that I'm a newbie and should listen to my instructor. Got that... and certainly will.
I also know, from experience, that starting off a hobby with at least some basic equipment above what's provided in a learning environment can be beneficial.
As a Rescue Diver... I'm super glad I at least started out with my own mask, snorkel, regulator, dive computer, and fins. Made my student time much, much better than the average student who showed up with a notebook and pen. Yes, I still waited on purchases like wetsuits, boots, drysuit, BCD, alternate air supplies, drag bags, separate release-weight systems, flashlights, dive knives... on and on...... and years later improved upon my original purchases with upgraded ones.
Anyway... I get it... "Shut up and listen, new guy."..... but I'm just trying to do some homework, before hand, to make a handful of small purchases that might make the learning experience a bit better... and came here for expert advice on doing so.
Cheers!