You can display and sort content in the Library in any of several ways. You can also search for library content.
Click the List View button in the lower-right corner of the Library.

Click the Icon View button in the lower-right corner of the Library.

Click the Icon Scale button in the lower-left corner of the Library, then drag the slider to the right to make the icons larger, or to the left to make them smaller.

On a Multi-Touch trackpad, pinch open to make the icons larger or pinch closed to make the icons smaller.
The Theme pop-up menu under the preview area lets you sort Library content by thematic categories such as Abstract, Nature, Sci-Fi, and so on.
Do one of the following:
Select a category in the Library sidebar or stack, then click the Theme pop-up menu and choose a choose a theme.
To sort using the default themes, select the Content category, then click the Theme pop-up menu choose an item.
Click the Search button at the bottom of the Library, then enter text in the Search field.

Note: The Search field is not available unless the Search button is selected.
Click the Clear button at the right side of the Search field.