I just wasn't sure if there was more to it, or other procedures that were different from the buying strategy. 

So, do what you have to do- Don't even let them know you are upset and start on the eviction procedure.

I am a honest man and want to be sure I follow the proper procedures. 

When Homeaway began to restrict the ability for owners to see the guest's email address or telephone number I was worried that because I could not talk to the guest when they initially inquired (as was my procedure) I would end up having to cancel bookings because the guest might not meet my requirements (age, number in party, non-smoker, no parties, etc.)

I have educated myself well and good at crunching numbers, but I lack the procedural experience that comes with deal making when it comes to multifamily.   

If they don’t pay the new rent amount, we follow the same procedure we do with someone who doesn’t pay rent or partially pays rent. 

Catching up with unclaimed depreciation is considered a "change in accounting method" and, as such, you're NOT permitted to fix it by amending past returns.The correct procedure is to file Form 3115 with your next tax return and catch up with all missed depreciation at once.

How do I sell my property what is the procedure, seller and buyer commission, why does a attorney need to be involved etc?

Understanding their procedures will help you avoid unnecessary costs.

The commission may impose a civil penalty of no more than five thousand dollars upon any unlicensed person who, after a hearing or informal resolution in accordance with all provisions of this Chapter and the Administrative Procedure Act, is found to have engaged in real estate activity without the benefit of a currently valid license having been issued by the commission pursuant to the provisions of this Chapter.