Though, this process will be the same for the other state (if you created a CA LLC you may need to register it as a foreign LLC in the state in which you are doing business/holding property).

You want to get the process down to that and then repeat it, repeat it several times, even do two at at time when you can. 

Do investors own the properties in individual LLCs which are all owned by a holding company LLC?

Investment Info:Small multi-family (2-4 units) buy & hold investment.

I would recommend you read "Buy, Rehab, Rent, Refinance, Repeat" by David Greene. 

Investment Info:Single-family residence buy & hold investment.

Investment Info:Townhouse buy & hold investment in Redwood City.

By draw schedule I mean you complete the first 1/3 of the rehab, then they reimburse you for that completion, and repeat for the next two faces of the rehab.

Do you form a new LLC/entity with each new property you buy or do you have one LLC/entity holding them all?

The properties I deal with are buy and hold properties, I typically do short-term & mid-term rentals that is my bread and butter airbnb, vrbo, etc.