Then if she's open to that concept, you can start explaining to her how leverage and appreciation also play into potential returns, and that small beginnings now can potentially lead to the financial freedom of your whole family. 

The only limitation is how much you are willing to pay in taxes for the amount(s) converted.It is likely the presenter may have been either confusing the concepts or charting a Roth conversion path that was also dependent on a 60-day rollover to access funds.  

Listening to a recent BP podcast, I learned of the concept of being able to purchase a home using the difference between the appraised value (assuming it’s greater than the sales price) and the sales price as the down payment for the house.

The names of the financing vary, but the concept is the same.  

Theres a very interesting concept that I’ve spent some time researching, the build-to-rent.

That's a broken concept. 

It was on the market for a while; finally we were introduced to a property manager and they've done a great job getting tenants and managing the property.I'd like to build wealth through passive income and I'm now teaching my kids these concepts that I wasn't taught.

Additionally, with the usual 3 cans, instead of the nine next door, its much simpler to spot the right can.

Another simpler option is your husband could charge a "bird dog" fee. this is simply a fee for finding a deal.

.% of profit is a great concept and I love that it aligns interests, but know going in that it significantly increases your administrative burden compared to a simple % on the loan.