Just took the shelf on Friday. Most of my classmates thought it went well but I thought it was pretty rough. I liked the uwise questions because it was something you could pull up easily during downtimes, and I thought it covered a lot of high-yield material. However, I wish I would have spent more time with blueprints on some of the less common stuff (I read BRS before Blueprints, and I think Blueprints was more helpful).