I purchased this before a cognitive test for a 75-year-old. It's useful for gaining general knowledge of what kind of tests are involved. I think it's enough to just glance through it so it doesn't interfere with the actual test. If you feel less anxious, you can relax. The license renewal went smoothly. Having it on hand as a good luck charm is like having a demon with an iron club! It will be shipped via Click Post, so it should be delivered about two days after the purchase date.