Over the past months, a number of readers have privately, and very kindly, asked whether I would be okay with them selling their used copies of my exam prep book, Preparing for the California MFT Law & Ethics Exam, once they’re done with it. In short, I am. But selling isn’t your only option for using test prep materials after you have passed the test you bought them for. And there are a couple of options you shouldn’t take. Let’s run down the list of what you can and can’t do with used exam prep materials.