Here is a link to a free course I have on Udemy if you need to study up for the State of Wisconsin Safety and Buildings Electrical Exam.
The course teaches a method that I have had great success with as I've taken 6 S&B exams and passed them all the first time. The last exam session I was in had a pass rate of two inspectors..... enough said.
Looking for a course to study for free? That above link may be the one you need. After the first few examples of what not to do it settles down to how to study and work through an exam so you can pass the exam the first time.
With an old guy like me its tough to sit for four hours let alone have the brain on "HIGH" without blowin' a fuse!