I was wondering if their are any specific resources you would recommend I read over to help me better prepare for PTA and student supervision related test questions.
These resources contain the legal requirements for PTA and student supervision.
I find resources related to teaching principles to be much harder to come by. The APTA offers a credentialed clinical instructor course if you are looking to improve your clinical teaching skills after the NCS exam, but there are not many other PT-specific teaching resources available.