Congratulations and welcome to the forums. My husband & I just bought our first AS too. We don't have much experience but these forums have become our book & manual. Members go out of their way to help. The search feature is great. A member gave me this url which may help you too.
Airstream, Inc :: Travel Trailer Specifications
Like I said, not an expert by any means but we started by pulling up the carpet and then cleaning everything. We have discovered a lot that way. My husband is using the forums to find out information on the systems, but we are planning to take it in to an AS service center for a brake/axle checkup.
I am sure that someone with more expertise will be responding soon. You have come to the right place. Got pictures?