What happens next?

How to use google + 
Go to the google plus homepage. 
If you already have a google account (one you use for gmail, google drive, youtube, and/or other google products), click on the " sign in " button. Otherwise, click on the link to create an account.
After you create a google account, enter your name and select a profile picture to get started with google plus. You will be immediately taken to your google plus account.