After you complete your Paper + Spark purchase, you should receive an automated email with download links.
You can also log into your account at paperandspark.com and click "Spreadsheets". Your account is automatically set up under the email address you used to compete your purchase at paperandspark.com
Under "Spreadsheets", you will always have access to the most up-to-date version of your spreadsheet purchases.
On this page, you'll also see links to your video tutorials, the Google Docs instructions, and other relevant info.
For a quick video walk thru: