Before you go on, make sure you've made yourself familiar with Pattern Lab.
When you are starting a brand new project with patternlab-scaffolding, follow the instruction for the First time setup.
When the project already exists and you want to get it running on your local machine, have a look at Getting started.
For a thorough documentation, have a look at the Wiki.
It is important to clone this project. Downloading the ZIP won't work! Please follow these instructions thoroughly.