You will find a link for each Class in the menu. There you will find a Lesson tab with the topics covered during class and resources to dive in deeper. Each lesson will include links to the in-class demos. When you click these links, you will be able to see what the instructor is typing live on your screen! You should also keep notes during the class session, whether on your computer or in a physical notebook.
Under each Class, you will also find an Exercises tab. Each exercise will specify how you should set up your project, give you instructions to complete, and in some cases, you'll see a "final result" that you should try to achieve. It is expected that you complete the exercise before the next class period. Practice makes perfect!