It sounds like you are doing more pre-study than what many do prior to attending a CFSC/CRFSC course. The course is not designed to be overly complicated or tricky but there are some non-negotiable points that have already been covered by others in this thread that need to be adhered to.
For those looking to learn the complete course, minus the practical handling prior to attending in person, our master instructors have created a full online training program that can be used for pre-study.
https://silvercore.ca/online-courses/online_cfsc-crfsc/