Perhaps asking specific questions on what exactly you are looking for advice on. I can tell you that you will definately need to inspect the frame and subfloor as almost all trailers need attention in these areas.
Welcome, Jim...Poke around in the subforums on restoration and rennovations..or run buzz-words in the search function and you'll find lots of information...and you can always ask if you can't find what you are looking for...there are plenty of folks here who have rebuilt their Airstreams from the ground up and the great thing is that they are willing to share what they have learned along the way... They're good at moral support, too!
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