If you want to learn more about landlording and taxation and liability (LLC) - here are some books to get you started on this: for accounting and taxes - Every Landlord's Tax Deduction Guide (make sure to get the latest edition) (and you can supplement that with Deduct It!

I'm looking for additional avenues to supplement my income.

All of my Myrtle Beach friends don't rent or only rent to supplement.

As a little background on myself I am a tax consultant by trade (applying for my CPA license in January), and want to build my real estate portfolio that will provide solid cash-flows to supplement my earnings and accelerate my retirement.How do you estimate operating ans capital expenditures on a month-by-month basis to determine NOI?

You could roll it to a self-directed IRA and invest in real estate that way, or maybe do a 72t distribution and have it supplement your mortgage payments to help you accelerate the equity building.

That way you retain your privacy and still accomplish your goal of supplementing the mortgage with rental income.

I've not read it, but wonder if it would supplement our current ideas. 

With all these jobs, I would love to earn some additional income to supplement my FT job so I can quit the PT one.

Long term I intend on using real estate as a vehicle to supplement my current income whilst obtaining true financial freedom. 

As for where to invest, I just went with the areas I knew really well- though CA is notoriously expensive to buy, the rental rates make a decent supplement to my income, especially while I stay overseas.