When signing documents on the subsidiary, do I sign as the Manager of the sub?

Looking for where I might find a document template for this. 

If you are going to be selling the note follow the 10/10/10 rule10% rule/ 10% interest rate (actually go 9.9% so it’s under 10%) over 10 years.You will first want to get a MLO (mortgage loan originator) to approve the borrower so you comply with Dodd frank (assuming owner occupied) - if not owner occupied skip to step 2.Have the MLO work with the title company on drafting the documents.

I read “the book on rental property investing” and it had information on how to access rental documents.

There is no REAL legal documents for you and you have to go to court in hopes of getting something out.And I wouldn't go to court if I invest 5k because the court will cost me money too.On the other hand I can use this 5k for down payment to buy a property and rent it and let the renter build me equity with solid legal paper work.

I am working on a "letter of interest" with my attorney so I can have signed documents in hand from those people.

Once documents were completed, started getting subscription agreements.

That's the one and only governing document. 

When he originally moved downstairs, I added the son to the lease just so I had it documented.

If you would like a more formal document you can just create a Google document with the address/tenant information and update it every month the tenant makes a payment and share it with them.