Up to you, but lots of people have found that the extra stress of the test detracts from their ability to learn from the experience.
Getting started at a coach development camp is more focused and less pressure. Nick et al should have more of these scheduled any day now.
The Coach Prep Course is designed to get you up and running. It's one of those things where you get more out if you put more in. We have some who do the minimum, but others engage students and instructors actively. If you post more coaching attempts and more programming cases in the course, you'll get more out of it. I recommend you look into it.