Actions gives you the option to easily manage your Sets.
You can import and export them for backup and to exchange them with your friends using iTunes or Dropbox.
The Sets are saved internally as single files, named exactly as the corresponding Set, so they are easy to recognize.
If you are using a Mac, you will see .acts files
If you are using a PC, you will see .actw files
The easiest way to manage them is using Dropbox, so you will have all of them continuously synced between your iPad and your Dropbox folder over the cloud.
If you don't need or want to use Dropbox, you still can import and export them using iTunes.
Import, Export and Backup Sets via Dropbox
Import, Export and Backup Sets via iTunes