I'm qualified, 2 problems though, your miles away and also unfortunately, I don't have the time!
Theres some good advice above, most walls will enable you to get a handle on the rudiments of belaying techniques and sport climbing. Any wall should have only qualified personnel or trainees under supervision.
Another option is find out about your local climbing club, most would be keen to help, advise and take out newbies. Plenty of experienced folk in clubs with expertise in different fields, rock jocks to mountaineers. Most of them organize trips away to different areas which will give you an idea of different rocks, techniques, gear, single or multi pitch, etc; Oh yeah, and they often hold social meets in pubs
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Good luck and enjoy yourself.