None of us are as smart as we think we are when an investment goes right.Lastly, I'll borrow a thought from Morgan Housel - don't seek the investments with the best returns; seek the investments that will allow me to make an average return for the longest period of time.

However, when I’m told on the day of closing they need an appraisal and won’t be funding to close, that isn’t professional.

Professional tenants can smell an opportunity from a new landlord from a mile a way. 

If you are broke and trying to quit your job asap, the answer will be much different than what an acceptable answer would be for a professional investor who is a multimillionaire.

The sooner you start these conversations, the better prepared you'll be when the right deal comes along.Local professionals can also be an invaluable resource.

If i was renting out my house with a pool i would:-Have it professionally looked after. 

Once you find someone willing to let you shadow them, approach it with professionalism and a willingness to learn.

@David Sam Cost segregation can benefit a property under $400K by accelerating depreciation to offset taxable income, especially if you qualify as a real estate professional or use the short-term rental loophole.

They were professional, prompt and great to work with. 

This doesn't come cheap--these folks were making high six to seven figures depending on volume.We focused on lending to professional real estate investors--so our customers were frequent repeat borrowers.