Well, I try to be helpful, and you are very welcome - but your call on making the best of whatever. One can learn a lot from my screw-ups at times. I am bad about following my camera too much, and had over 400 dives the last time I screwed up badly - in part paying too much attention to my camera. I'd never done a real, emergency CESA, much less from 50 ft, and it was scary - but I swam out of it unscathed. A newbie might not fare so well under that pressure.
I have read of many newbies losing their new cameras and it seems that most are on boat hand-offs. My practice is to keep my reg in my mouth until I am fully back on the boat (aside from the OOA experience above) and I have learned to approach the boat with both hands on the camera, holding it up to the crewman, not turning it lose until he has it, ready to chase it if he drops it - but they don't.
Then, move onto the rest of safe exiting - except I keep one eye on my bud at all times as real buds enter, dive, and leave together, period!
See if State Farm has offices locally? The agent may not know about
Personal Insurance for Computers, Jewelry & More - State Farm but they carry it. Super coverage, low cost, wonderful - unless you have several claims like I did on other things, then they drop you. While I had it tho, great! If not, see about listing it on your home insurance?
Now I understand about sharing pics. I can find great photos online, but I like to show what I saw. You didn't answer about photo editing so I guess you haven't tried. PM me your email addy and I will send you a request for several pics. Let me show you what I can do in seconds. I have overflashed so many nice shots I have been tempted to stop using the strobe and just fix in edit, but I'm still trying to learn in my fumbling way. Hehe, my home bud shot some pics on one dive with his flash covered by the strobe link, but strobe off - just black on screen, but I said:
"Let's try this..." Came out pretty actually. Wish I had saved before and after.
Oh, you might look into a scuba photo class, preferably on a dive trip - and you can still use your Canon. Either way, good luck...