If this is really something that you would like to get into I would suggest looking into getting your real estate license for educations and ease of finding more deals.

What is the difference between brokering without a license and wholesaling. 

I'm not familiar with the liquor laws in your area but I've lived in some cities that only provide X number of liquor licenses in a square mile.  

I'm a REI newbie and I would like to find a mentor to work with and learn from.Currently, I work full-time and travel with work but have completed the Mortgage Loan Originator coursework for my state (New York) and am considering getting my RE Salesperson License as well as Title Closing Certification.Are there other things I can do/learn to make me valuable to a potential mentor in my area?

What is this title called and do I need a real estate license for it?

On a small 1,000sf house we get them installed for about $3500-$4000, with the right licensed contractor.

My wife is working her way to get the RE license.

The rental license shows it to be "4 dwelling units + office (low-rise)" but the county is showing it simply as a 4 unit residential. 

yep i'm with Arlen on the importance of labor laws and liability thus the need for a legal middleman if you employ anyone other than a licensed independent contractor under a written contract, even if it's a 'consultant' or 'virtual' assistant/temp.

We also had issues with our general contractor who's subs weren't fully licensed and were careless, which resulted in several delays and several failed inspections.