In this module, you create a Developer Edition Account that provides you with a full-featured but isolated Salesforce environment to perform the exercises in this workshop. You then enable Lightning Components in that development environment.
Even if you already signed up for a Developer Edition account, it is strongly recommended that you sign up for a new Developer Edition account for this tutorial.Some of the steps in this tutorial may break some of the work you already did with your existing account.
Open a browser and access the following URL: http://developer.salesforce.com/signup
Check your email. You will receive an activation email for your Developer Edition Account.
In Setup, click Develop > Lightning Components
Check the Enable Lightning Components checkbox