Arrow keys or space button only if you're not being timed. Assignment: Read chapter 3. Summarize it in no less than 3 NON-RUNON (like, well, this happened then this happing and then he said and then and then and AH YOU'RE KILLING ME WITH RUN-ONS!!!) sentences. Since you haven't read much yet, there's no quiz this lesson.
To the designers: Yeah. The thumbnail is terrible design. Deal with it. The next lesson will be faster.