Here are the links provided in the April 9th session. The session notes are the starting point, the stamp art is provided as part of the tutorial.
Beginning Acrobat Pro for Education
• Pete's Session Notes:https://docs.google.com/document/d/1oETZEv84SwQ6hnBcfKe5UT11vKgK98yJK0XwmBufhNU/edit?usp=sharing (Shared Google Doc)
• Stamp Art Samples: http://goo.gl/uXXF1W (9.1 MB .zip file)
• The Teacher List: http://www.theteacherlist.ca