I won’t try to tell you what to do other than if there’s certain properties that just consume way more energy you might consider 1031ing them into slightly larger properties where you could get better economies of scale for your time and expenses.

This initial negative equity position consumes the initial cash flow.  2) the addition of the adu makes the property multi family and likely makes rent control apply.  

While your condo snowball strategy builds equity, modest cash flow and HOA fees may limit returns.

It was a small $$$ project but time consuming because that was something I DIY'd while living in the property. 

Where are getting that consumers pay three times as much in commissions as other developed countries?

Such strategic zoning decisions bolster the provision of affordable living spaces, invigorating local economies by amplifying the consumer base to support nearby businesses.

  (2) Variable cost: platform fees from Airbnb and VRBO, lodging/hotel/transit or whatever pass-through tax your local AHJ requires, cleaning fee, cost of replacement for consumables, repair and maintenance, etc. 

For any commodity market, costs are passed to consumers when demand balances or outstrips supply.

I think they contain solid information and will help lay a good foundation as a beginner (Haha, I'm completely new to real estate as well, btw)I'm also going to be reading the following books, and hopefully I can finish all by the end of this month:1) The ABCs of Property Management2) The Advanced Guide to Real Estate Investing3) Long-Distance Real Estate Investing How to Buy, Rehab, and Manage Out-of-State Rental Properties (this might be the most important one to me personally)4) The Book on Investing in Real Estate with No (and Low) Money DownIn addition to reading, I'm consuming crazy amounts of youtube videos, and I'recommend you do this as well.

I'm not a lawyer, but I've consumed about 1000 hours about Wholesaling both commercial & residential, and none of what they do requires a license.