I have downloaded a good one for you that you can use:
Start a new project in Adobe InDesign and click File > Open
You will find the digipak template here:
Computer > Subjects > Media Studies > Year 13 A Level > InDesign Digipak Template > (double click on the file).
You apply your work on top, using InDesign in the normal way (ignore the upside down bit- do yours all facing the right way up obviously!), but here's a video to help explain the basics:
https://www.youtube.com/watch?v=AmdInWDPLvw
