Professional trade journals such as Accountancy, Tax advisor and others. 

Sometime in the next month or 2 we plan to choose the exact property.Short-term goal: Buy a turnkey single family or duplex which cashflows even after accounting for management and saving for future vacancies, maintenance and capex.

I used my Self-Directed Retirement Accounts to loan on several sheriff sale auction properties in the past.

One more great reason to have a great accountant guiding you like these folks posting above!!

Will they have to contact their bank ask to set up a recurring deposit to my account?

Just update that lighting to make it look warmer and you should be good to go.I would create a separate bank account for the place.

And to add to what you talked about, my marketing agency helps me with content creation and strategic organic growth  consulting but I do not do paid ads for my business or for properties.

Needing to track everything from rentals, scheduling, leases, accounting and marketing - it was a big Ask!

How is a join account seen if is my brother me on it?

If you are identifying individual private money lenders, you can consider having a conversation with them about using their IRA, previous employer 401ks, or other retirement accounts.