No, you can not see any previous complete interviews, this is done for security reasons.
However you can see a demonstration video on how to complete your interview.
All you need to do is login to your account by clicking on the link in the invitation email you received, enter a password and you are in.
An introduction video is available straight away that will take you through the process step-by-step.
You can see the process for Laptop/PC here: Laptop/PC
You can also see the process for iOS/Android here: iOS/Android