First of all, we must persist for a long time and persevere in the face of difficulties. Because it is difficult to learn the circuit, it will not happen overnight, and only a long period of tempering will bring good results. First of all, we should establish a correct learning attitude, whether for university circuits or other disciplines.

Secondly, to be specific, we must first have correct learning methods, so as to preview before class, listen to lectures in class and write homework carefully after class. Ask questions when you don't understand, and don't dawdle with a little knowledge.

Finally, the main knowledge points of university circuits mainly include: circuit rules and circuit components, resistance circuits, transient analysis, sinusoidal steady-state analysis, power and frequency characteristics of sinusoidal circuits, Laplace transform, operational amplifiers, two-port networks and so on. Master the main knowledge points and do more questions.