On the Explore tab, scroll down past the first few collections until you reach extras. Extras will only show if your school has added these services to its collection. If your school has not added these services, you will not see extras at this time. See the logos and summaries for current providers to make an educated decision about what to explore. 

Tap on the extra if you're interested in reading a more detailed description. From this page, you can visit the resource or tap to return to any of the other areas of Sora. When you tap to visit a resource, your journey will begin in a new window. But you can return to Sora easily at any time. 

Click to get access and start exploring the content. You can use the service as much as you'd like during your access period, which is shown below.