For instance someone informed me that attaining a property with a tax lien could = a great deal.

You're much better off with a 401k in these instances.

There are instances when you ask if a task was suppose to be done by yourself or your agent.Do you guys (Agents/Investors/Buyers/Sellers...) have a checklist of tasks you perform when buying/selling?

In this instance this woman has been a homeowner (and previously living in a new house) so there are two strikes against her liking being a renter and living in an older place.I do like the suggestion that, if she continues to be a royal pain in a low spot you either consider offering to let her buy your house (if you are interested in selling it) or offering her the "Happy Clause"; however, in doing the latter you'd have to return any unused rent.  

In some instances the seller doesn't allow you to view the property or give much information.

There are instances that you can currently expense it under the new rules that came out a couple years ago. 

For instance, if he has $19k equity in a car, you could give him a reasonable interest rate with the car as collateral.

If you say for instance I can buy this business and if such and such happens then this will be a great deal.

Do not be an Eagar buyer, eager to get the deal.there is language that you can use that will help you be a reluctant buyer.For instance“I don’t know if this would work for you, and  I would have to check it over with my business partner but ...what if I could help you with the debt service payments, your mortgage payments over the next 36 or 48 months, I’m not sure...with that be a fit for you or maybe not?”

Typically in Spokane, you'll find areas that have very similar pricing but can have a great spread through the whole city and county.For instance, the properties you listed are in very different neighborhoods.