Creating an account for the Cloud 9 IDE can be done in a few simple steps:

1. First, sign up for an account on the Cloud9 homepage, by filling in your desired username and email address and pressing the Sign me up button:

You will then see a message indicating that we have sent you an email to the address you provided with activation instructions:

2. Check your email now. You will receive an email from us with a link to activate the account. Click on the link. You will now be asked to set a password for your new Cloud9 account:

3. Click on Activate. 

Congratulations! You are now the proud owner of a Cloud9 account. Now, go ahead and create your first project. Happy coding!