That's a valid strategy, but as others have mentioned, you'll want to have some experience and the proper credentials before approaching property owners.

If the tenants are actively violating any terms of their current leases or agreements, that's a valid approach to managing the tenant and potentially replacing the tenant.

If you were going to start over again had no starting capital but already had a real estate license what approach would you take? 

I recently was approached by a company who wants to buyout my rooftop cell tower lease.

A property management company has approached me to partner with them so that they can start managing short-term rentals in addition to the long-term rentals that already manage.Their role would be the boots on the ground dealing with turnover and maintenance and I would handle pricing and guest interactions.

I did this approach with the first 3 homes we lived in, all about 2 years fixing slowly.

I work for a Chicago sports team in the ticket area. 

When you take ownership the best approach is to push to full market immediately to maximise profits long term.

The downside to this approach is not having the capital from the sell of the house.

The issue with answering your questions is that every individual has different goals and ways they should approach the "next steps" depending on their financial situations.