Note School and a few other sources sell these on a regular basis to their contacts.  

I’ll explain, the majority of people get W2 jobs for security reasons like a safety net.

You do need to understand debt and the underlying securities but this is certainly lower risk than above.Note funds.

And they regularly parked cars in my property's driveway. 

If the funds are secured from a residential property they do not need to be in your account for any period of time. 

Tenant estoppel certificates are generally to confirm a lease exists, a security deposit is or is not held, and that neither party is in default.People saying this is a slam dunk simply because OP has a recorded deed have apparently never heard of a true title dispute.

That said, I don't buy CFDs and perhaps many CFD investors (particularly beginners) don’t realize that’s a key risk between secured notes vs CFDs.

Gift funds are documented and scrutinized.You can use a loan for the full amount of down payment and closing costs if it is secured by collateral. 

When syndicating a deal, you've now turned it in to security.

If they were SF properties, I'd probably place the tenant and use a service like secure pay one or something else that is not a full service management company but still a landlord helper.