When you purchase Talking to Toddlers (whether on CD or in digital format), you are always given a download link by email. Simply go to your email inbox and look for the message we sent you upon purchasing. You'll see a link that will take you back to the download page. This will let you download from another computer (for example, at home).
If you are a grandparent who bought this course for your own children, you can just forward them the download link by email.