First click not the little people icon in the top right hand corner.
Then you will be presented with a login screen as below. Select register
The registration screen should look like this:
You should then receive an email. Having a challenge with bounces from Microsoft hosted accounts I am afraid. If not fill out the contact form. You will need to login.
Once logged in, the screen will take you to the wordpress screen. You can get back to the sit by selecting the link shown.
Then you should be able to select + from the right hand side of the screen.