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What age did you all start? I'm 25 and really don't wanna turn up at a starters course full of wee kids......
I started climbing at 16/17. One of the guys I did trapeze with introduced me and a few mates to it. Don't recall doing a proper course back then.
I'd suggest getting a mate interested as well if possible, as you need a belayer as well. At my local walls most of the time starter courses are small groups; they generally do a session for just the 2 of you and an instructor. Also consider joining a climbing club, there is bound to be one near you, and they'll generally introduce you to climbin for free, and then you have plenty of people to climb with, and they'll generally coach you on technique, and will probably climb outdoors aswell.