Any advice on how to organize my rental properties which are currently under my name and am I currently using my personal checking account to manage them.

I’ve begun doing a lot of research into rehabbing recently, as my goal is to be a buy and hold investor with an emphasis on the BRRRR strategy.

You just volunteered as free labor and are thus running a charitable organization called "Tina's Non-Profit Property Management."

I am looking for advice on how to get setup and organized with everything in regards to the financials and managment of the property.

https://www.irs.gov/newsroom/irs-has-begun-sending-letters-to-virtual-currency-owners-advising-them-to-pay-back-taxes-file-amended-returns-part-of-agencys-larger-efforts

Most times I will just keep them free and clear and let the 'cashflow' (repayment of principle) restock my dry powder organically but rates lately make it tempting to finance some. 

If the lot is really small (and with that density limit) you may be looking at a single family home only but some jurisdictions have begun to allow for ADU's or DADU's (accessory dwelling unit, detached accessory dwelling unit) which could allow for someone to have a small apartment on a single family lot spreading out their mortgage costs and / or allowing you or them to condo it out and sell separately.

Also to become a regular at REI clubs and organizations events to network with the brokers and potentially get your foot in the door that way.Best of luck!

They create automatic income and expense reports and now I keep everything organized in the app.

@Mike Bonadies I took your advice and acquired The book on Investing in Real Estate with No (And Low) Money Down by Brandon Turner this past weekend and I have begun reading.