To supplement my down payment, I have secured $50k via gift and inheritance.

I have heard mixed responses on whether to charge both first and last month’s rent and a security deposit, or just first or last month’s rent and security deposit.

Plan is so that he can retire and him and my Mom can be financially secure on rental income while my sister and I manage the properties in the trust. 

The lease termination fee needs to be paid at the time they request this, do not substitute the security deposit for this purpose.This will ensure compensation for time, money and effort needed for a tenant turnover, including advertising and showing costs, regular repairs, utilities during vacancy etc.

Security Deposits / Escrow: If you would like to use Baselane for an escrow account, you can simply open another sub account that is separate from your day-to-day activities.

Security deposit amountYou can find plenty of examples by searching for "tenant estoppel certificate doc" or exchanging "doc" with "pdf" for more options.Here is an example and explanation: Sample EstoppelSome have a lot of legal jargon but this document does not need to be so detailed.

Let's say I buy at tax sale, I want your rehab money 30 days later, would you lend to me for the rehab without security of the property?

Borrowing from multiple investors on one note creates a security that likely requires a registration or some other form of exemption.

This is a general question for security deposit deductions made by a landlord of a complex.

But one of the best resources I've found is just reading, and listening to, as many books on the subject as I could find to really help deepen my knowledge and expertise.I actually just started listing to audio books over the last year or so and found a great app called Libby, that you can download for free through the Cleveland Public Library system and there's tons of great audiobooks on real estate and investing that I listen to when I'm driving and has helped me a lot!