I've been doing passive and active REI for almost 20 years now....mainly multifamily

You can look for active wholesalers in the area you are looking to invest, you can be active in social media sites like FB marketplace, craigslist, etc., you can look at forclosures, there is a marketplace on this website with off market listings, the list goes on and on. 

I’ve been actively looking for multi-family homes near my area, and have found some great places.

Fix and flip is a lot of work and only brings in money while you are actively doing it. 

That said, you'll want to be very mindful of location: Many parts of Austell are in or near active floodplains, as evidenced by the catastrophic Flood of 2009 (https://www.weather.gov/ffc/atlanta_floods_anniv).The City of Austell Public Works Department provides comprehensive Floodplain Management services, including education, mapping, and many other resources, at https://www.apwsm.org.

All are actively managed. 

Your subject is not moving and you have time... something that is inexistent in other part of the photographer activities.

If you don’t want to be as active in your property’s management (i.e. you’re not cut out for “by owner” management), then hire a good property manager to handle the nitty-gritty details like prepping the home for the next tenant. 

I found my first buyer in a fb group, but I believe because there were active contributors to conversations I vetted him as "real deal".

If you are an agent in NYC, what are the yearly costs to keep the license active?