A much smaller update than the last time, but it's still an interesting concept. The book taught me how to utilize and manipulate animation paths. An obvious but necessary skill. As you can see here: the book provided a ball moving in a figure 8 pattern, and then explained in detail the workings of all the attributes. By going to Animate -> Create Etidable Motion Trail, a visible and changable path is created. The book emphasizes the importance of having weighted tangents in the graph editor in order to make the techniques function properly. To be honest, this is just a different medium of editing curves in the graph editor, it's just more visual since you can see the object since it's in the viewport and you don't have to deal with obstructing graphs if you don't have enough real estate. By using attributes like Beads and Tangents, you can change the path to your liking, although it's beneficial to break the tangents first in the graph editor.