Thanks to Roger Pience N1XP, for sharing the following links to courses offered by Massabesic Adult and Community Education:
On-line registration is available at https://massabesic.coursestorm.com/course/ham-radio-level-3
This course is open to all – a General Class license is NOT necessary!
The ARRL EXTRA Class License manual is available at my ARRL instructor rate of $26. Please let me know if you wish me to order the manual for you.