Typical Prop Mgmt can't manage a co-living home, and all the special considerations that are required, but even typical mgmt costs 10% or 11% considering they take a months rent for vacancies to get a new tenant in place.

The rules regarding a CO can vary between different localities; however, if the property is legally allowed to be occupied it should meet the readiness requirement.Availability generally means that the rental property is advertised to be rented.

As a beginner, you can learn a lot from your uncle with a few rentals in another state or a co-worker who's on their second house hack.

If all else fails you could add on a co-host but something tells me you'll be wildly successful doing this on your own. 

The laws are still evolving, so it's helpful to have a co-host that will keep up with the latest regulations, keep you in compliance, and help you to pivot your rental offerings as needed. 

You can add another member/user as a Co-host in AirBNB or your booking engine. 

As a beginner, you can learn a lot from your uncle with a few rentals in another state or a co-worker who's on their second house hack.

Once they meet your criteria and are ready for the lease it's important to tailor the lease to a co-living space that establishes the rules and responsibilities for shared spaces.

I have a scenario that I am looking for some tax EXPERT guidance on what the rules are for capital gains on a co-owned property, and best way for this to play out.  

You would need a W2 to get started with that or a co-signer on a single family home.