Chapter01 and Appendix does not contains code files.

To get the most out of this book, a modern laptop or desktop computer is required, running an up-to-date version of either Windows, macOS, or Linux (preferably Ubuntu). About 4 GB of RAM memory is recommended at the minimum; more RAM is always welcome.
It is assumed that the reader has a reasonable knowledge of the operating system of their choice and is comfortable with installing programs and adding directories to a path.