I am learning how to do some basic title research.

Bad idea, outside of the "smell test".....depreciation is just basically an interest free loan, if you don't 1031, since you pay back 25% on all those deductions when you sell.  

What is the best method to basically cold call or write to a person who owns the vacant lot next to my rental house.

Basically, you can buy 1 100K House outright, or 5 100K houses all with 20K down payments.

What I recommend, as well as currently do for my rental business is, buy your next property for cash, and then do a delayed financing on the property once you have a lease.Delayed financing is basically just like getting conventional financing before you buy the house but is done after you already purchase the house for cash.

Would I be able to rent the property basically for whatever the voucher is for or whatever I decide?

Basically, I'm just trying to get a discussion going.

I've also had a family member die during the last week when all contingencies had been removed, but everything was basically done at that point.- Some medical debt that no one had any idea about, or way of having any idea about, suddenly appears as a collection account on the credit report.

Basically walking distance to convention center. 

When evaluating properties be sure to make sure they include the basics like: Real Estate Taxes Insurance Gas & Electric Water & Sewage Repairs & Maintenance Unit Turnover Contract Services General & Administrative Payroll & Benefits Marketing & Promotion Legal & Accounting Landscape & Snow Removal Trash Removal Management Fee Reserves for ReplacementsThese items at the very least should be included in any competent underwriting of a property, be it by a broker or the owner directly.