I want to note that ethically, I do not feel comfortable collecting rent from her next of kin so the component of obligation of the estate is largely irrelevant.You are also apparently supposed to secure all of her belongings and note anything that is removed by family members that you allow to visit the property.  

A few generic questions I’ve been struggling with:After obtaining my license, what would be the best route to be at a level, which I can start comfortably flipping properties or securing rental properties?

If I can't mitigate my risk with a security deposit, then I'll come up with another method or I'll just stop renting to them.

Big deals like notification limits, security deposit amounts and accounts, paying tenant interest on security, etc etc etc. 

Get copies of the leases, make sure the owner transfers security deposit with the sale and contact the tenant right after closing giving them notice of non renewal.

It is also far more secure than letting people share a key.

I got a security system installed and some lights outside.

You will need a personal guarantee or collateral such as a lien on a paid off property to secure the loan.

Not going to last forever as I prefer the security of a bank.

The case concerned a bankruptcy debtor who was granted a discharge of her personal liability on the mortgage loan in question, but the lien securing the loan remained on the property.