By now, hopefully you are comfortable with the relationships between sprites, their costumes, the Stage, its backdrops, and how you can use broadcasts to connect scripts among sprites and the Stage.
Don’t feel discouraged if you feel that you’ve learned nothing more than “toy code” thus far. You have all the time in the world to build full projects from beginning to end in the final two hours of this book.
Also, there is no way around the sheer time, repetition, and practice that is required for you to know your way around the Blocks palette.
You know that you are well on your way to becoming an honest-to-goodness computer programmer when your mind starts thinking in terms of “Ohh, I just thought of how to have the program do such-and-such” as opposed to, “Now where is the wait for block again?”
The next hour continues the fun. There, you’ll learn how to integrate sound effects into your Scratch projects.