Electrical Help

So I’m in a 147 school. Not super happy about how my basic electricity and airframe electrical classes were taught. I feel like I barely understand the subject at all, despite making a 100 and 97 in the classes respectively. The instructor for those classes was not very approachable and when asked for help gets frustrated you don’t understand it like him. I have a halfway decent understanding of the book knowledge, but don’t know how to apply it to hands on. Like my understanding of troubleshooting, and tracing faults in a circuit are awful. What are some good resources I can look at in the next 2 months over the winter break to better my understanding? Thanks in advance.