Well Done! You have completed the section on Animation. You should now have an understanding of how animation works.
There are lots of articles on the Internet that explain animation in more depth, as well as give examples of how animation is used today. For starters, you could look at Adobe's Beginners Guide To Animation.
If you were interested in creating animation, you could use CSS, or you could check out the many animation creation tools that are available, many of which are free. This article, 7 Adobe Animate Alternatives, lists some good examples.