I invest out of state as well and have been for few years now. My local market got out of hands where the numbers didn't make sense (still doesn't). I highly recommend David Greene's long distance investing book however when I started going out of state that book didn't exist. It took me building a team to get started there, being in tech industry (for my day job) I use flow charts a lot when architecting software so below is the flow chart that I came up with that helped a lot of my friends to go out of state as far as team building goes-
Connect with local banks (called 12 banks)>once bank is ready(not all banks lend to out of state investors from my experience)>connect with local property managers>connect with local handy man (other investors in the area share those info)>off market deals come from banks or property manager.
Also I lived in the state and am a bit familiar with some of those towns when I was in college. It wasn't a smooth beginning but as time went on things got much easier. Now I don't spend much time on managing as the property management takes care of majority of it. I visit the town couple times a year & connect with local investors over coffee or lunch-100% of my deals out of state have been off market till date.
I also recommend for someone going out of state not to take on rehab projects-it will be a lot of work unless you are ready to spend a ton of time. In my opinion start small and very less rehab-should set someone for success.