OK, since your dive instructor will probably show you all the necessary moves, here's a tip that maybe will come in handy:
When at sea, when you first get in the water, if you feel any nasal congestion at all, I find it's a good idea to snort up a little sea water, the salts inside will help clear your sinuses, which is crucial in adjusting to water pressure as you go deeper. If you're very congested/sick, and you feel any persistent pain while on the way down, stay at that depth for a while, just watch from up there, and keep trying to decompress. Never force it.
Also, before a dive, it's a good idea to rinse out your mask, spit in it, rub it inside and rinse again. Spit will take care of fogginess, etc.
Don't worry about being a good swimmer. That's where divers don't have to worry. Once you're in control of buoyancy, you're no longer fighting against the water, and fins can propel you with very little effort.
I'm excited for the inevitable photo of Crompsin in full tactical Scuba-ops gear.
Let us know how your first dive went.
(This thread just gets me giddy because I haven't had the chance to dive in 3+ years)
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