Screening as always is the key.

You have to be in control and never deviate from your process of screening tenants.

The reason I used 12 properties is so that you have 2 extra because even with all the tenant screening and 2 years leases and every attempt something will under perform so you have a buffer with 2 properties. 

I think with proper tenant screening and digging in to see how motivated people are in staying long term might go further to helping you land the right tenant regardless of terms.  

I have placed an add already on Zillow and Craig's list and have many interested parties daily, and am screening tenants now, but am wondering if I should buy another house in the same market in here. 3) Should I always pay for a home inspection before buying these distressed properties while I am starting out?

I've begun to educate myself on properly screening potential tenants, taxes, codes/laws, leases, insurance, and budgeting.

Absolutely love your Tenant Screening Interview Questions.  

Post ads on Craigslist every day, open houses, flyer the neighborhood (maybe someone has friends or family interested in the area), include some fun stuff  with the house that doesn't cost a bunch like big flat screen TV, etc.

The owner can require the property to be restored to its original condition after move-out.Be careful in your screening process to not do or say something that could be considered discrimination against a protected class.

(I pretty much try to screen for free and clear or very high equity.