The course description indicates this class being at an introductory level, yet students with previous experience and knowledge of solid state physics seemed to benefit more of it. Just taking this elective hoping to spark an interest and future exploration of this subject is a mistake. Without prior exposure to and prior understanding of the material, Professor Gutierrez's lectures can be disorienting and hard to follow. Bruinlearn notes were OK. The exams were the worst I've ever seen in the Physics department, where one small mistake on a previous subproblem will snowball into 25% or more loss of the exam grade, despite doing subsequent portions completely logically correct. If you're interested in this subject take ECE 123A instead.