What are your specific goals with real estate investing?

Any specific areas of Columbus? 

As mentioned above, they specifically allow this.  

Podcasts on the way to and from work, and read a book right before bed, maybe even squeeze a few minutes into browsing some specific topics in the forums.

Unless you find a buyer with a very specific criteria who is willing to pay above the typical 70% - repairs.

You will want to consult with a lawyer.In regards to your last two questions here's some background on what makes a contract valid and enforceable:Offer: A promise to do or not do something within a certain time period Acceptance: A clear and direct statement that all terms and responsibilities are accepted Consideration: A legal and adequate inducement given in exchange for the promise Capacity: The parties to the contract must have the legal capacity and competency to contract Awareness: A party must be aware of the contract Legality: The contract must be legal in the jurisdiction it will be operating in***Not legal advice*** Steps I would take: -Review contract in detail to understand each counterparties responsibilities (if you are not aware)- Email a copy of the lease to each of the tenants listed on the lease and reiterate lease expectations for termination notice, rent payment etc. - If the lease was signed via Docusign (other esign may have same ability) - you can go to the envelope, go to history and view the IP addresses for each action taken.

If you are planning on living there (ie in 1 unit) then you are house-hacking and this is a different calculation consideration then renting out both units and making it a true investment.

I'm not specifically familiar with BP's deal analyzer (I use my own).

Yup, property condition, vintage, neighborhood, tenant base, property management are all very important considerations. 

Scaling-  your question is both country and even town specific.