While reading through the book, you may have questions about the material, or you might find typos or mistakes. For the latter, you can add issues to the errata for the book at https://pragprog.com/titles/dcbang2/errata. Think of it as a bug-reporting system for the book.
For the former—questions about the material—you should visit the online forum on the book webpage at https://pragprog.com/titles/dcbang2. There, you’ll be able to interact with other readers and me to get the most out of the material.
I hope you’re ready to start your journey in full-stack application development! Let’s kick it off by creating our new Rails application and doing all the up-front setup for our development environment.