Welcome to the Forums. By typing your name in the subject box, you may get fewer replies... If you want more specific advice, use the subject in the first box that you think will generate the most interest and replies...
As a new member, you are required to learn to use the "Search" tab in the blue bar above.. It lets you enter words singly or in combination and shows all the existing message strings ("threads") with those words in them..
Try searching for "finding" and "Used" and "classifieds" and so on, and you'll see links to the best web sites for classified ads, and other buying tips.. If your plan is to try living in the Airstream for a long period with little experience, there are two theories: Step carefully and avoid over-spending in case you don't like it; and GO FOR IT... Can't help you with that one...
In Theory, there's no difference between Theory and Practice, but in Practice, there is usually a difference...