Put the instructions for the tenants in writing and tape them to the door.

We also include a list of common deductions in the move out instructions letter that we send.

Include instructions for paying rent, reporting maintenance issues, etc.

Had a minimum, you should write them an introduction letter that lets them know you are the new owner, where and how to pay rent, how to report maintenance issues, or any other specific instructions you may have.

I created a little book with instructions on simple stuff, like how to shut the water off to the toilet if it starts to overflow, stuff you can, and can't put in the toilet. 

I was in institutional private equity for years but the best modeling instruction I ever got was from a 3-day class led by a guy named Josh Kahr. 

They can instruct you.

On the site, it gives landlords instructions on how to use these features with potential applicants. 

Now that she's failed to follow your instructions, you're going to let it go?

That being said, I also have a Policies and Move out Instruction document that I have tenants read and sign at the time they sign their lease.