Code downloads and support for the first edition of the book (published March 2020) is still available. Please follow this link.
Please feel free to let me know about any problems you may encounter with this book.
I will respond to all bugs and errors and to any areas of difficulty that end up foxing a group of readers.
I will also be interested in exploring new ideas and projects, so suggestions welcome.
This book is available on Amazon as a large formal softback