I can say one mistake I made was while buying in great neighborhoods (up and coming) I lost equity on two where we bought on a busier street.

Action will always trump inaction - I have made mistakes, but this deal has taught me a ton, AND we are making money on the deal.

That was a huge mistake as they wanted roof replacement & grass cut. $6k for roof, $1200 to cut the grass on 10,000 sqft lot.

Generation Z is the worst.  

I put my criteria clearly in the listing: 3x income over rent, 85% on-time payment history on credit report, and good references from past landlord.The biggest mistake you can make is taking the word of a current landlord.

What happens if you sell a property to invest somewhere else and make a mistake?

Yes, it's easy to ask you these questions after the fact, but you won't succeed unless you carefully review your mistakes and learn from them.Not sure I agree with your statement, "RTR knew they’d messed up".

Your agent should be able to connect you to a lender that would have experience with the VA process.Quick primer on VA loans.https://www.va.gov/housing-***...One of the things I did since my first purchase was to write down in a log all the mistakes I made with each  property.

Think of the worst case scenarios of what can go wrong and are you ready to handle that.See if you can buy time. 

You can hear real-world examples of how others have built their investment portfolio and (hopefully) learn to avoid their mistakes.4.