Help me pass this section please

I am trying to do the professional online course, but for the life of me, ‘Mastering the Basics’ is giving me trouble to understand. I need please if someone can volunteer to help me pass this section. I tried for more than an hour. I am in need of some help please. Thanks in advance.


If you can be more specific with where you are stuck, someone will be able to provide some help. A link to the level would be most helpful.

Happy computing,