Howdy, and welcome to the forum!
This is the best place to find answers to questions! At the top of the forum you will see a blue toolbar. Find the word "search" and if you click on it a little search box will appear. Key in a word or phrase like "sink repair" or "toilet repair" and you will be referred to threads that have that subject. Sometimes you will have to read through a lot of stuff, but usually you will find an answer. If not, post a question! It will get answered!
If you are interested in being referred to a place of business that will repair your trailer, I suggest you make a list of the things you want repaired. Read the posts about the repairs/items and it will help you get a real feel for what might be needed and pitfalls to watch out for! Then ask folks in the forum where they may have gone in your area... Repairs can be costly! Many of the folks here do their own repairs~ but not all. Lots of backyard mechanics on this forum!
I would also suggest looking at the Airstream Rally link on the blue toolbar. Go to a local rally and see other folks with Airstreams and what kind of repairs they have faced... not to mention what they have done and how they may have decorated their 'stream! The rallys are usually great, the people are wonderful, you can have a good time and make new friends!
Mrs. NorCal Bambi (traveling in S Tardis)