Before creating an account you are able to view the Study Library which has information about each study. On the 'Get Started' home page there are 5 screens you can swipe right across to view. If you swipe across to the fifth page you can access the course library and view potential studies.
If you have an account you can click on the profile icon on the bottom right of the screen, then select course library and look through the studies.
If you would like more information on this please raise a ticket here to speak to a WordGo customer support agent.