The following sections explain how to download the Three.js tools:

Downloading and extracting the archive

Git is an open source distributed version control system that I used to create and version all the examples in this book.
For this, I used GitHub, a free, online Git repository.
You can browse this repository from this link: https://github.com/mrdoob/three.js/
in a browser and click on the Clone or download button on the right-hand side.
This will give you the option to download all the sources in a single ZIP file:

If you don't want to use Git to download the sources directly from GitHub, you can also download an archive.
Open https://github.com/josdirksen/learning-threejs in a browser and click on the
Clone or download button on the right-hand side.
This will give you the option to download all the sources in a single ZIP file: