If you know how to use git, then clone this repository into your computer using git clone https://github.com/jotasolano/d3-workshop-broad
Otherwise, click the green button on the top right of the screen that says "Clone or Download", then "Download Zip". Finally, unzip the file. It is recommended that you locate this folder in a directory close to your root, such as Desktop or Documents.
Please remember to check that you have python installed in your computer. Follow the steps listed here if you're not sure.