To make it easier for other users to find your contribution, you should select the most specific category for your resource. For example, if you have a crossword puzzle that uses vocabulary only found in Volume 1, Lesson 1, you should post it on the Volume 1, Lesson 1 page, instead of the Volume 1 page.
However, if you have a more general resource, such as a lesson plan for all the lessons in Volume 1, you should post it on the Volume 1 page.
Notes: