No chapters has a number in the heading, even though these do exist in the contents.
In the Layout-chapter in the beginning it talks about the Messages tab. This tab doesn’t exist in Android Studio anymore - it has been replaced by the Build-tab.
In the same chapter the screenshot of the Palette-area doesn’t match the latest version.
In the same chapter, in the section Component Tree view there is a redundant “the” in the sentence: “…tricky to get it in the exactly the right spot inside the right parent view”.
In the same chapter, in the section Adding rules to your position, it says “Click and drag towards the left edge of the blueprint screen, and you should see your TextView move slightly to the right”. It doesn’t move slightly to the right for me, instead it moves slightly to the left! Same issue in the text regarding creating the top layout tule.
The chapter, same section as above: it mentions the “Properties”-window but it is now called the “Attributes”-window.