the key:

Classes with a picture icon have images on the class detail page
Class Levels:
NOTE
Certain skills OR additional fees required for this class
(Fees payable in cash to the teacher in class.)
NO SKILLS REQUIRED Absolutely no experience necessary. Valuable for all levels of the craft.
EASY Participants with basic skills.
INTERMEDIATE Participants have solid basic skills.
ADVANCED Participants have solid skills and experience in the craft, ready to explore or refine.