Check out the course website
The workshop projects can be found in the exercises folder. Each exercise has a README file with instructions on how to run it.
You will find empty files called part1.js, part2.js, etc. for each sub project in which you should write your JavaScript code as you go through the workshop.
There is a solutions folder with the solution to each exercise if you need to see the completed project at any time. This folder contains all the code written during the workshop.
You will also find a folder called solutions-old that contains the original code I was planning on writing in the workshop if you want to have a look. It is very close to what we ended up doing during the course, only with a few little adjustments, such as more layers in the custom model.