1.Visit www.airdroid.com, and click Sign up on the top menu
2.Enter your E-mail address and Nickname (The Email will be your AirDroid account)
3.Set a password and click sign up
Note:If you have already installed AirDroid on your device or PC, you can sign up there too.
If you found that your Email was already registered. it may caused by the email has been signed up by others or you have signed up it before. In this case, you can reset password to regain your account.