You can choose to sign up and create a new account using: your email address, or using your Facebook account. At sign-up you will also be asked to provide a password you would like to use to sign in later.
The primary difference between the two is the sharing features available:
You can share your videos with others via email.
You can share your videos with others via email or Facebook, and you can export your videos to your Facebook Timeline. Find out more about signing up via Facebook.
If you log in via email and decide later you want to use Facebook features, you can connect your account to Facebook in "My Account" settings.
Additional Note: To learn how to add your new videos to an existing account, click here!