Apologies for missing your comment (I didn't get an email notification of your response). We just had a new release for Nengo GUI. The tutorials from the book "How to Build a Brain" are now included as built-in examples in the GUI. You can use
pip to get the new version of Nengo GUI:
pip install --upgrade nengo_gui
After upgrading, when you open Nengo GUI, you should see an open file icon on the leftmost side of the top toolbar. Click on that icon => then click on
built-in examples =>
hbb_tutorials. Here you will find a list of tutorials from each chapter in the "How to Build a Brain" book.
Let me know if you have any further questions.