The Mist web UI is available at this URL:
The web UI uses the Mist APIs for all administrative operations. Anything done in the web UI can also be done by a script.
Register for access to the demo environment at this URL:
The demo account credentials will be sent to the specified email address.
Go to the Mist web UI and sign in to the demo account:
Once logged in, you will see the Mist web UI dashboard: