What would you recommend as far as regulators and/or computers go?
Where computers are concerned, you need to consider a couple of issues. There are so many brands & models, I'll give you some example 'types' from Oceanic Worldwide's line, plus one notable Atomic Aquatics (the Cobalt) due out soon. Be sure it's nitrox-compatible, since you may eventually dive nitrox if you don't know.
Form Factor.
1.) Wrist watch style (e.g.: Atom 2.0 (3.0 due out soon), Geo 2.0). This sounds good until you realize that these things cost a lot of money and you're probably not going to wear it as a watch most of your life.
2.) Wrist 'Hockey Puck' style (e.g.: Veo, VT3). Watch-like but larger & so the display is larger.
3.) Console (e.g.: Oceanic Pro Plus 2.1 - you want the 2.1, not the older 2.0; also consider the Atomic Aquatics Cobalt) - looks like the console SPG/Depth Gauge/Compass that you may already have. Hooks to your regulator by a hose.
Air-integrated or Not.
1.) Air-integrated computers keep track of your air usage, so they function like an SPG. Console computers might as well be weight-integrated, aside from price differences. An air-integrated wrist unit will rely on a wireless transmitter attached to your regulator 1'rst stage; this is said to work decently well, but you may lose signal occasionally. This impacts price substantially; compare the latest Veo to the VT3.
2.) Non-air-integrated. You use a regular analog SPG, and if you want to log your pressures or enter them manually into dive software later, you write them on a slate or something after your dive.
PC Downloadable or Not.
1.) Some computers have (included or as a pricey add-on) the option to hook to your computer (generally by a high-priced proprietary cable) & download dive info. to your computer (usually PCs, but the Cobalt is supposed to also support Macs).
For online orders, I like to go to ScubaToys.com & be sure & mention in their system you're a member here, since I believe you can often get a discount. I've also bought from Scuba.com and LeisurePro.com.
Richard.