I start school this fall to become an RN which will definitely help supplement my real estate venture.

you can call the credit agencies and provide them with the private note and cancelled checks and they will issue you a supplement adding it to your credit report.  

I have decided to go back to school to get an MBA in Finance, to learn more about finances in general and supplement my career choice, but I ultimately just want to build wealth and financial freedom.

Do you want to use real estate to quit your day job, or just as a supplement for retirement income?

My wife and I are looking to create supplemental positive cash flow while we retain our current careers, and have decided to look towards a multi-unit property rather than a single family for our first property purchase (living in one unit until we purchase another property).

The sales work will eventually come without much effort and will be a nice supplement to your steady PM income.

It's a quick read that I would use as a supplement to other guides.

Here is item 3 mentioned above1.Delivery of Property Information Items: Within 7 days after the effective date, Seller will deliver to the Buyer:a)copies of all current tenant applications and leases pertaining to the Property certified to be true and correct, including any modifications, supplements, or amendments to the leases (applications, leases, modifications, supplements and/or amendments to be made available to Buyer during regular business hours at the Property);b)current rent roll (showing lease rent, delinquencies, lease expiration and security deposits paid), certified by Seller to be true and correct;c)most recent 3 months bank deposits;d)a copy of Seller's income and expense statement for the Property for the last 36 months immediately preceding the effective date;e)copies of the Evidence of Insurance for all policies since the last renewal, including invoices, current policy, and copies of the last three years loss run from the insurance carriers for fire, hazard, liability and any other insurance policy that relates to the property;f)copies of all previous surveys, environmental assessments, geotechnical reports, studies, architectural, engineering feasibility studies, “as builts”, plats, or analyses made on or relating to the Property, including maps, plans and drawings;g)real and personal property tax statements and any appraisal notices for the Property for the previous 2 calendar years;h)copies of current capacity letters, and current utility bills from the property's water, sewer, gas electric, trash, phone and cable service providers for the past two years, or permission to access these accounts;i)copy of existing Property Management Agreement; a)payroll detail – 2012W-2s, YTD monthly, and most recent Y-T-D paystubs;b)a current inventory of all personal property to be conveyed under this contract and copies of any leases for such personal property;c)copies of all notes and deeds of trust against the Property that Buyer will assume or that Seller will not pay in full on or before closing;d)copies of all current service, and maintenance, agreements relating to the ownership and operation of the Property; including but not limited to: Laundry Lease, Cable/Satellite, Electric, Phones, Leasing, Commission, Advertising or other;e)copies of all current warranties and guaranties relating to all or part of the Property;f)current and past capital expenditures for the past three years;g)copies of all work orders for repairs incurred by Seller for the Property in the 24 months immediately preceding the Adjusted Effective Date; (work orders to be made available to Buyer during regular business hours at the Property)

I am 19 years old, am currently working as supplemental IT and do rapid prototyping for a machine shop, in addition to attending Purdue's New Albany branch for mechanical engineering.

Once you have determined what approach works for you, additional information can be supplemented through reading and asking questions on the forum (as you have done.)