As a starting guide for markets, here's an older BP blog that has some basic considerations:  https://www.biggerpockets.com/blog/2012/12/22/out-of-state-real-estate-investing/I'd also highly suggest David Greene's book on Long-Distance Real Estate Investing: https://www.biggerpockets.com/store

Alejandro, Please invest in a book called "Long-Distance Real Estate Investing" by David Greene.

Anyone have tips on how to put together some sort of packet to bring to him so that he knows this is a legit option and to help him see the benefits of this?

I'm living abroad in Germany but want to apply David Greene's long distance real estate investing strategies into buying my first property. 

Any tips and tricks to approach them, provide meaningful value for them and building rapport? 

@Daniel DietzGood tips to know up front, thanks!

I'm usually tipped off because they also pay the rent late.Here is a learning point:  I did have one instance where a tenant was current with their bills but shutoff utilities anyway. 

Any tips on good resources for calculating comps and rehab expenses?

Thanks in advance for all tips, tricks, and advice. 

I'm interested in house hacking a duplex triples quadplex with my soon to be wife to start off.Any tips or advice?