Camuhrun,
I second the advice given by Parrothead Diver. It would be good to get certified where you will be diving. Unless you plan to have all your dives in tropical locations, it could be good to get some experience in the local conditions. Otherwise when you try to dive locally at some later date, will you have someone there to help you through the new conditions?
In addition, your pool instructor will know you and you will know them so the cert dives will be less stressfull and less intimidating. As you will learn, being relaxed a a very important thing.
If you never dive the different local conditions, how will you know whether you can handle them? How will you know whether you like them or hate them. My buddy and I got certified in 51 degree Monterey Bay. Diving warm was an easy adjustment. Someone who learned in bath water would have a harder time adjusting to diving California afterwards. I know people that have gotten certified locally, and then dove tropical later. Many eventually become WWW (Warm Water Wussies), but at least they know. I know others that were certified in tropical locations and refuse to dive locally, so they will never know A) if they could handle it or B) what they are missing.
You know, another good reason to get certified locally is this: The best way to improve as a diver is to practice practice practice. Someone on ScubaBoard once said that someone who hammers in two nails a year is not a Carpenter, and someone that dives two dives a year is not a diver. Unless you plan to travel a lot, the best way to practice is to dive locally.
Just some random thoughts.
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theskull,
perhaps he didn't ask the instructor because he doesn't start the classes until next Monday and he may not know or have access to the Instructor before then.
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Wristshot