Imagine a world without letters. Well, no need to imagine, here it is!
Here you put to the test the entire keyboard, minus the letters. No words, just symbols (lots of them!) and numbers.
You will likely find this to be one of the hardest lessons in the course, but once you've mastered this to the degree you have all the others, you will truly have reached a new level of keyboard fluency.
Just be patient, and work up the speed gradually, as you have every other lesson. Remind yourself of the Principles for Effective Learning before starting.