Are they still relevant/valid?

Like Paul said, references are great and an amazing way to actually talk to current customers. 

This space could be a great place for someone to build a customer service focused company in just about any location.

Instead of its previous goal of reaching as many Americans as possible, the company will now focus on home loans for existing bank and wealth management customers and borrowers in minority communities, CNBC has learned.2.

The one really doesn't have that much relevance to the other and it's not a good analogy.

The only reason I would suggest doing it is if you were planning on doing Property Management for other customers other than just your own businesses.  

I would also look at Google reviews and look for bad reviews, especially reviews written by landlord customers and not tenants.

I want to start to resale, self help material, dvds, training for customers, homeowners, to buy off me from my marketing.

Dive into podcasts, books, and take relevant classes!

I have language in all of my contracts that says the original completion date is invalidated as soon as the customer starts making change orders.I'm not saying that his unresponsiveness is excusable or that going 2x over the timeline is okay.