I'm new to REI but having been doing research and studying for almost two years now.

If it's your job to maintain a premises, then you're liable if you don't.

I've been trying to study on my own online for the CA Real Estate License.

Having the data is akin to studying your competition.    

If the company manages correctly (money, maintenance etc.) the grounds and buildings are kept up and this will also add the desire for people to want to move in.So based on what i know the HOA is the one who maintain the ground & building, and my property manager will be focus on the revenue & expenses side.

The previous owner of the triplex I brought gave me an excel sheet with numbers and said this was how he maintained the tenant accounts.

Ask questions on the forums as you have them.I'd suggest you pick one of the areas you mention (wholesaling, flipping, rentals) and study up.  

I have done extensive research and countless hours of book studying but I need hands on experience.           

Since Wholesaling really requires you to build up a list of cash buyers, that seems, to me, a bunch of work for a very small piece of the available profit on a deal.Why not search for cash lenders or cash partners instead and maintain a larger piece of the pie?

Try to maintain a calm, professional demeanor and always back up your position with written proof.