Yes, I'm a member of this club. I guess it's like any large club - lots of people coming along and large class numbers. You could talk to them to see what class your dog should start from (if you feel you've got a good parternship and the basics with your dog). They may put you up into a higher class based on your experience?!. they have a website so you might find some more info on that.
I guess its like anything - they'll be instructors, people and dogs you'll like and some you won't, but I'm sure it's a good starting point for your new rescue for interaction and socialising. They join dogs over 6 months and under 6 months (puppies) on alternate sundays. They're not there this coming Sunday (World Youth Day) and I don't know what joiner is on after that (website might help there)? Anyway, good luck.
Thanks Lacey13 - I will definitely give them a call with a view to joining up as soon as possible!