To access the videos:
  1. Log into WordPress as an administrator
  2. Scroll to the bottom of the Dashboard on the left
  3. Select Video Tutorials
  4. Click Custom Video Tutorial section to expand the menu
  5. Review the following videos: 
18. 10. Taking Donations (External or Embedded)
19. 10a. Adding A Donation Form To The Page
 
These two videos cover the steps needed for understanding how to setup a page using Paypal to your Wordpress site.