Do these steps to install a basic Bloom Pack that was distributed to you:
Copy the Bloom Pack file onto your computer.
You can copy into the Bloom folder that is under My Documents. However, you can put in another convenient folder.
Double-click that file.
This installs the shell books and templates on your computer.
A message box appears and states, "The <name> Collection is now ready to use on this computer".
Click OK.
Close and restart Bloom.
The new sources appear below Sources for New Books on the Collections tab.
You can change the filename extension to *.zip, if necessary. Then, the recipient can change it back to *.BloomPack.