Check out this article I wrote for BiggerPockets.
4 Smart Ways to Overhaul Your Outdated Landlording (& Boost and Profit!)
The main points are that you should:
1. Focusing on a niche and move away from Craigslist
2. Tap into your ancillary income opportunities
3. Exercise your civic leadership
4. Experiment with one unit – split test
There are lots of ways to operate – traditional landlording is the least profitable way of all the options.
You can find more ways to tap compartments of potential income by picking up the 40 Ways book at Amazon.