Good luck on your shop, RosiesWorks.
Lots of respect to the math teachers out there. To all teachers, really.
Keep asking questions. I, personally, have very few answers. I'm only one month old on Etsy, but i have found the community here to be AMAZINGLY kind and generous with advice.
Search the forums for advice. If you have a question, someone else had it too and probably asked about it.
I also have learned much through browsing around. Try all the buttons, make a treasury, buy something from another shop, stare at the recently listed item feed for a while, heart some items, convo someone, etc.
Just make sure all the tests are graded first. And try to be generous with the partial credit when grading!