But in contrast, I am more inclined to solve problems. This book all appears in the form of questions, which captures all the knowledge points in the questions, avoids the fidgety theoretical knowledge, makes the learning efficiency higher, and the book is rich in content, suitable for students at all levels, with novel questions and some classic questions. It's just a little too thick You need patience and attack bit by bit. This is the book I use, which often appears in our monthly exam questions. The decision to solve problems is also good, and the method of type problems is more detailed. It is up to you to choose.