For everyone so far these are my top tips as I will be getting busy soon.
1. Know who you are. How do you handle stress? What are your strengths? Who would you like to work with? How much time do you have? What is your current work / life balance like? These are the biggest factors that will determine what happens long term. A C-class single family rental out of state may work for some, but they are not you, you may be different.
2. It's not all about what the spreadsheet says. Initially I was so focused on cash flow and nothing else. I've learned the best return was the appreciation and debt reduction (thanks to the tenant paying rent). It's amazing what a few years of debt pay off and appreciation can do. Keep in mind, when I speak appreciation I'm talking about the midwest too, not the coasts. You can hold the property for a few years, then sell for a good profit. If you want to hold it long term, you can always do a cash out refinance for renovation costs.
3. Operations and management are key. How do you want to run your business? That's what this is. It's not sit on the couch and do nothing. Nobody will take care of your property like you will. You'll have to set some very clear expectations upfront with the renter.
4. You'll make mistakes and bad things will happen. This is part of the learning process. Don't expect things to go perfect because they won't. More good things happen than bad, but eventually it'll happen. If you have the mindset that you'll make mistakes, or something bad happens you will adjust and improve.
5. Start simple. There are a lot of complex strategies out there, that doesn't mean you have to start with one. Keep it simple. The best start for my market is a duplex house hack in a highly desirable area with a standard loan and very minimal renovation. Rental rates were high, but the tenant quality was high. My cashflow wasn't very good, but the appreciation was. I enjoyed living in the area, improving my own home and my rental at the same time, the tenants, the low stress of managing it, etc. You don't need to do anything real crazy.
Best of luck!