Training for Trailing/Search & Rescue

I know there have already been threads on this subject, but I was hoping for some more specific advice. In the future, I want to get involved with Search & Rescue, and I was hoping to get some insight from people who have already done such work with their dogs.

How does one go about finding a group to work with? I'm looking for a training group that would be on more of the "casual" side, since I'd like to dabble in it with my current dog who would have a load of fun with it, but I know wouldn't have the work ethic needed to do actual SAR (husky! haha) The only groups I've found in my area so far have either been actual, serious working groups, or serious sporting groups for tracking which isn't even what I'd like to do. For people in the US, are there any parent groups for trailing that might show smaller groups in my area that you know about?

Also, what are some ideas for training at home? Ideally I'd find a group to work with first, but if I can't find someone willing to work with someone who isn't serious about actually working their dog, I'd at least like to "play" at home with training.