Expiration date

hi guys , i install 3 modules 1. Node expire 2. Node expire extras 3. Node expire patterns i just want to create a reminder to course Expiration and send email to the user that not finish the course/quiz i read a lot and i think that now i need to create a rule ...butt i try and nothing happened. I have no knowledge of the Drupal system...so i really need your help. Kobi