Tax liens a good idea?

[John Hogan]

Hello everyone, 

I currently own a house and about to start renting it but I've been wondering about tax liens as a back up plan and I know nothing about it and the podcast only has one episode that I've found (which I would love more). I'm wondering if it is even profitable and how much does it take to get into this side of real estate? As well as if it is smart to even have this as a back up plan