This chapter of the book contains tutorials. Tutorials teach you things in a logical order from start to finish. If you are looking for something to guide you through learning Bevy, maybe some of them will be useful to you.
The rest of this book is designed to be used as a reference, so you can jump around to specific topics you want to learn about.
The first tutorial in this chapter, Guided Tour, simply organizes all the topics in this book in an order suggested for learning, from the basics to advanced concepts. You can use it as an alternative to the main table of contents (the left side bar), if you are just learning Bevy and don't know how to progress. If you are new to Bevy, you can start here to find your way around.
If you would like more narrow-scoped examples that teach you how to solve specific problems, those can be found in the Bevy Cookbook chapter.
You should also look at Bevy's official collection of examples. There is something for almost every area of the engine, though they usually only show simple usage of the APIs without much explanation.