Every now and then you will run into someone here that thinks they know it all, LOLKeep reading watching and listening here and it will gradually become more clear to you. 

Are you hoping to secure a steady stream of income without much active involvement, focus on gradually growing your wealth over time, or perhaps strike a balance between these two approaches?

They are paying below-market rent (one has a lease expiring next spring, and the other is month-to-month and the rent will be increasing gradually per advice from the property management company I am using).

I suppose just gradually re-renting as people move at the market rate would be the way to go?

I guess as we gradually expand the number of states we lend in to all 50 we will and are encountering interesting issues we haven't seen before. 

Gradually, a bigger portion goes to principal, and the interest portion starts shrinking.

If it isn’t that much then  just raise the rent gradually each year until they are caught up to market rate.If they are Section8 tenants then you are NOT subject to be limited to rent control laws generally.

There wouldn't be much point in paying our bills on time if there was.You can start a business with an ein number and gradually build credit just like you would for personal, but it will take time.Maybe find some partners with cash/good credit.There are also some good forums that can help teach you how to get negatives removed from your report and find new positive credit lines to improve your personal scores.

Get a repeatable system in place, then take gradual steps to luxury properties if that is the niche that you ultimately desire to work in.

This gave me the option to make gradual payments.