Besides the potential issues with buyers for the properties we’re renovating finding loans (and all the potential challenges there), what impact will there be to our construction crew, availability of materials, etc?

I purchase building materials with my CC, but I pay it off IMMEDIATELY.

You're behind the 8-ball now that you have a property and don't know what to do with it.An alternative is to find a local wholesaler and enter into a partnership agreement for this deal. 

@Kat Hem  You offered all of your tenants the option of a hotel if they didn't have alternate accommodations, how is the negligence? 

Also, I'm looking for a free alternative to the mainstream stuff.

Prices of some construction materials have doubled and tripled, so the cost of new construction will be increasing as well, and the governments printing of so much money during Covid can only drive inflation up. 

I am starting out in real estate and wanted to read some books around real estate finance, validating deals, calculating returns on investments etc.Are there any books or digital material that are a good starting point to learn about the financial aspects of real estate investing?

Once people rebound they will be looking for safer more stable alternatives and will be willing to accept lower returns in exchange for stability.

My tenant was looking for alternative work (driving for grub hub, etc. ) until this ends.

You can indeed in a self-directed IRA invest in a lot of alternative investments like real estate.