SimUText content must be accessed through the downloaded SimUText application, rather than directly or through a web browser.
To open SimUText, click the SimUText icon or (on Windows) the 'Launch SimUText' command on the Start menu.
Log in using your registered username. This should be the email address you used to register for your SimUText course and download the program.
The first time you select each module, the required files are automatically downloaded to your PC or Mac. To switch between modules, use the Home button in the SimUText application.