This class is a very dense class with a lot of information. As you will see there are quite some articles explaining the most important concepts for UI design. You can find the most important ones in the list below. I You don’t need to read all of them in detail, but it would be good that you understand and have a grasp of the different concepts and how to use or identify them.
In the appendix you can find some extra tools and resources to help you with grids and layouts, typography and colors.
Read the following article and pay special attention to the examples