Getting started with Graphene UI is easy, and these docs will tell you how. First of all, you will need to clone the github repository to your local computer. This is accomplished by opening a terminal and entering:
git clone https://github.com/cryptonomex/graphene-ui.git
This will clone the repo into a folder ./graphene-ui on your computer. If you plan on contributing code, you should fork the repo on github and clone your own fork instead. More