I am sure there are other good choices out there, but strongly recommend them.Stessa is lacking tenant communications and maintenance tracking, but overall stands up pretty well as free, or nearly free.Buildium is pricey and has a learning curve, but if you are going to exceed 20 units, definitely look to migrating to a real professional package like buildium

Charlotte has been a solid growth market over the past decade with strong job creation, in-migration, and a healthy rental demand, but because of that demand, prices have gone up quite a bit and a lot of investors are finding it tougher to consistently hit the 1% rule there.

Like the US and the USD losing it's dominating position in the global order, possible climate change-induced migration within the US and from Central America and even changes in our political system.

Mid income buyers will continue to be super commuters, several tertiary markets validate this.Im highly myopic to my area's but do wonder about Texas, North Carolina etc. as I personally think tech will continue to migrate away from the Bay Area.Another's ponderance I have is as boomers die off, will migration fill the gaps?

I am mostly interested in getting started with a house hack (preferably more than 1 door, like a duplex, triplex, or four-plex) then either migrating to another house hack and keep repeating or explore simply buying long term rentals.

Now my market, Jacksonville, is benefiting from the migration growth.  

You’re basically relying on CA migration, and while that may be a strategy, it’s a risky one.  

internal migration from places like New York etc has been driving the population growth, mainly of people of retirement age.

We've used Slack until lately, but are now migrating to Facebook.Regarding other groups that are great for networking but not REI focused, one of our most popular ones is called AVL Digital Nomads.

Per this NY Times article, the average American knows around 600 people.https://www.nytimes.com/2013/02/19/science/the-average-american-knows-how-many-people.html#:~:text=The%20average%20American%20knows%20about,do%20you%20know%20named%20Kevin%3FPer the US Census Bureau, the average American moves 11.7 time in their life, which based upon an approximate lifespan of 84 years, works out to be about every 7 years.https://www.census.gov/topics/population/migration/guidance/calculating-migration-expectancy.html#:~:text=Using%202007%20ACS%20data%2C%20it,one%20move%20per%20single%20yearSo, if the average American knows 600 people and they each move about every 7 years, that means that the average American knows around 85 people that move in any given year.How many of those moves do you want to be involved in?