My suggestion is to first contact your local S&R group. You should be able to find out from your local law enforcement or fire department. Talk to them, attend some of their meetings and participate in a training drill to see first hand what goes into being part of a S&R team. See if it really something you want to get into, it is hard work to train and keep up that training for yourself and the dog.
As far as getting a dog real soon, again I would say that you need to hold off until you see what it takes. Most groups are very particular on picking out the pups that they will train to be rescue dogs. If you jump the gun and get a dog that they deem unsuitable for their training what will you do then?
Suka - Female GSD