Dataset libraries can be used to organize the datasets you create into logical groups.  Creating a dataset library is an easy task.
Click Libraries from the Data Manager menu.

2) Click the Create New Library button and enter a name and optional description for the library.  Then click OK.  The new library will appear in the list of available libraries.

3) When selecting the library from the list of available dataset libraries, you will have access to other options for the library, such as changing its permissions or copying the library.