We are in the same boat as you - 1976 lake house at its finest "steal" that needs a lot of work. (Purchased pre MMM, and now hoping it will be our retirement home base.)
We've done most of the fixes we know how to do so far, and it is mostly liveable in a this is better than camping kind of way. Now we are left with a vaulted roof that sags on the top, and some other large projects that will be done in descending priority. We can't even seem to get professionals in the remote area to give a written estimate. The main beam "may" need to be replaced. I get so jealous when I see MMM just popping on additions and doing all that cool stuff.
We want to learn how to fix things ourselves in the future, but are scared to mess up structural things like a roof!
I have other skills in the landscaping, wallpaper removal, paint, wood flooring installation, etc.
It would be nice to find a "you fix this I will help with that" group. I think we are all scattered around the globe though. I'm debating volunteering at habitat for humanity so I can learn some new skills under the supervision of another person that knows what they are doing. :-)