The amount we seem to need to know has increased in 3.0 over 2.0. Mid 2.0 I started a 1 inch binder and had two note pads for crafting, gathering and gardening. Crafting one was for the rotations i wrote and why so that next patch I could update them for the next level of crafting. The gathering note book was really just part of the gardening note book. Most nodes could be remembered until the end of 2.0.

3.0 is a whole new story. The amount of information on all gathering nodes times, mats, collectibles was out of hand. It is nice for quick reference and one less thing I need to remember. The 2 star crafting took a few different rotations as I upgrade my gear.

In all in this game, there is just so much info that it can't all be remembered and a note book is really the way to go.