You can’t use an existing Developer Edition org to try wave analytics. You must sign up for a special Developer Edition because it comes with a limited Analytics Cloud Wave Platform license and contains sample data.
To register a special developer edition org, go to below link –
http://developer.salesforce.com/promotions/orgs/wave-de and fill out the form using an active email address, username like yourname@wave.app and other informations. Once you submit the form you will receive one account activation email where you need to reset the password and set secret questions answer. After that you need to login through http://login.salesforce.com link.
He is a technology evangelist, Salesforce trainer, blogger, and working as a Salesforce Technical Lead. After working in Java based project implementation, he jumped to the Salesforce system on a whim and never looked back. He fell in love with Salesforce’s flexibility, scalability, and power. He expanded his knowledge of the platform and became a Certified App Builder, Administrator, Platform Developer I, II, SalesCloud Consultant, total 11 x certified while leading the Salesforce implementation and technology needs. He has worked in a wide variety of applications/services like desktop, web and mobile applications.