It's good you are doing your research now, so that's a plus. If you are checking into a few clubs, see what group offers you the most. Some groups are more social, others more serious, etc.
With that being said, you can find out what you like the best as well. Some folks like show events, others are working people, and then there are those that are somewhere in between.
Experience is good to have in your training group, but for me, things/training needs to be fun as well, so just like anything else you will figure out what group suits you the best personallity wise as well.
Lastly I saw you mention you don't have a pup yet. I would see how these potential groups work with pups, and make sure you visit and ask questions, particularly about imprinting, and early training. Get answers, don't accept things like well we've always done it that way, so that's the way it is. Remember you can't teach anything to your dog, if you don't understand the concept you're working on in the first place.
Once you figure out the group you want to work with, the club affiliation stuff will work itself out.