To convert from a duplex to triplex in Philly not only will you need the zoning, but the permitting process gets more complicated as well.

If it really was a TAX auction, and not just a judicially ordered sale, it wipes out all junior liens. 

Its the most complicated closing AND more importantly POST closing; canceling the home owners insurance putting landlord policy on, getting the bank via the POA to work with you to setup auto pay from your bank account etc.A subject to starts with the numbers. 

This being a house-hack is where it gets complicated and why we rely on pros like Natalie.

Or complicated?

I purchased a HOA foreclosed property through our counties judicial online auction in March of 2019.

It's not really that complicated to buy out of state.

To answer your questions the best I can:1) you might want to consult a lawyer in GA about possible complications with opening an LLC from abroad, but yes I would look for this as a first step if I were you.

Most people don't want to be burdened with complicated technology on their vacation which is why emails has seemed to work so well I think (for my properties at least).But to answer your technology question, there are a lot of options you can use to 'feed' to your tablet. 

I think the main difference is you can start small and scale most business you would start take more capital and could be a tad more complicated than buy house rent house.