I'm going to start making some ads today and sit down with her and explain how this process will work out.

Get this right and buy good properties that you can get tenants that can pass a high standard tenant screening, will help ensure you will NOT encounter too many bumps in your road to achieve equity growth.Lastly, I did rent to one of my brothers, but I had explained to them that it's a business.

If anyone can please explain what’s the best way to pay mortgage, annual taxes, insurance, maintenance and still make profit after all that?

The current listing does not create any desire for the unit, it only lists the things that might cause objections (utilities, insurance, cost of background check) which should be listed at the end/bottom of the actual listing.b. 

Would someone please explain the difference in taxes between investing in MF syndication using Solo K versus using "regular" funds from my checking account?  

Can someone please explain this?

The ultimate objective of a BRRRR is to recover 100% of your capital investment so you can continue to recycle the same funds over and over again. 

As pointed out above these two objectives are often at odds with one another. 

3) Have you educated yourself to the point that you can explain it to others?

Can someone please explain paying back the DPA at closing through seller's credit or concession/proceeds??!