The Topic Page shows the contents of the topic selected in the Topic List.

If the topic is larger than the screen space allows, a scroll bar appears at the right hand side so you can scroll through the topic text. 

As well as text and graphics, there are many locations within the tutorials where you can press a button to hear a demonstration sound.

This delivers a powerful multimedia experience that reinforces the concepts you are learning.  You can change the volume and other sound properties.

At the bottom of each topic there is a Next Topic button, shown below, which takes you directly to the next topic.  This avoids the need to keep moving across to the Topic List to change topics.