Learning Market. out-of-state investor

[Yaron Horsky]

Hello All and may you all have happy new year.
Good luck to all of you BP members with your goals and ambitions.

As an out-of-state investor, and I would especially love  to hear investors like me which are out-of-state and crushing it, what would you say be the best way to learn a certain market?
I just read "the millionaire real estate investor" by Gary Keller(for those who didn't read it I highly recommend this book, and it also recommended by many, including Biggerpockets on the top 20 real-estate book page) and I learn there the "zooming in" concept.

State-county-city-neighborhood-streets....

After learning the market you should have your APB(All Property Bulletin) , which means specific criteria for your property.
"3bd/2bath, brick, year 2000+, 2 garages, basement etc..."

How can I reach this kind of specifics? how can I master a market being out of state?

Would love to hear your thoughts and opinions!

once again, Happy new year to you all!
Yaron.