Someone out there must study those submarkets pretty heavily and can explain how housing stock has changed or not changed month over month the last few months...I dove into the propaganda video that's making the rounds.

I’m sure video will follow once better base models release, maybe even this year.Third is your existing P&Ls.

If I am self managing my portfolio, what do I need to check/confirm, and what easily available tools are at my disposal (online, other) to help me do this? 

If you do not find success there, there are some online companies like SpaceJoy, Decorilla, Havenly etc.

Face-to-face connections can quickly build trust and often lead to referrals.2.Online Groups & Forums:Utilize Facebook groups, LinkedIn communities, and other local online networks dedicated to real estate investing.

The short version is that you want a strong and diverse job market, low unemployment rates, a growing population, low vacancy rates and new development, affordability/cost of living, real estate laws and court system, good schools, and low crime.Check out the videos from Dave Meyers with BiggerPockets.

I think eventually a VR set up will be common online or at RE offices.

I'm totally fine using resources like books, online research, and AI, but I was looking for real-life, experienced individuals who could shed some real light.

Any recommendations of online companies with these services?

I found them on line and wondering how was your experience if you ussed them.response would be appreciated