Linking the pages in your prototype is probably the most basic prototyping requirement. That's why it's so easy. For any component that supports interactivity, and all components support at least mouse click, just use the 'Quick link...' option to create a link. In the dropdown menu you can either select an existing page as the link target, or create a new page.
Once the link is created, the application will automatically enter in edit mode for that interaction. Here you can further select the transition effect which will be used to transition to the destination page.
As you will notice, when editing a 'Go to page' interaction, FlairBuilder will automatically switch to that page so you get a preview of the destination of you link. Pressing escape to exist the interaction edit mode, will revert to the original page and the component selected.