This book is written in outline format and is fairly terse. In order to get the most out of this book, we recommend the following learning path:
Read the Dart Language Tour.
A basic understanding of Dart is, of course, essential.
Skim the official Flutter Development Guide.
The official docs provide a great starting point for using Flutter as a developer.
Skim the official Inside Flutter article.
This article will give you a general idea of what's happening behind the scenes.
Read Didier Boelen's Flutter Internals article.
Didier's article has outstanding illustrations and descriptions that will help you develop intuition about how Flutter works.
Unfortunately, though methods and identifiers are frequently referenced, we haven't been able to provide deep linking to the relevant code just yet.
If you're able, clone a copy of the Flutter repository and use a tool like
grep to find the relevant sections. A source code browser with identifier linking is even better.