On the page that follows most of the dedicated drawing and instruction pages you will find grayed-out images that illustrate the nature of the exercise you are about to attempt. If you choose to, you can draw over these in your own style, in a way to become more familiar with the challenge you are about to take on. Alternatively, you can use the blank pages as extra drawing opportunities instead, i.e., where you can add more of your own original gesture drawings to supplement the drawing exercises you will be doing anyway. This is probably the preferred thing to do, as at the end of everything you will want to show your completed sketchbook, featuring as many of your own drawings as you can, when you pitch your animation show reel at important interviews. Clearly, the more drawings you pack into its every available drawing space, the more impressive it will be for you in the eyes of that important hiring person.