If you want to take the exam, the book General Psychology should be an introductory textbook for all university majors. On the basis of this book, you can look at the works of representative figures such as psychoanalysis, behaviorism, structuralism and functionalism. It is best to read the history of psychology, so that a system can be formed and it is easier to understand when that school appeared. These are the foundations. After understanding them, we can look at developmental psychology, social psychology, psychostatistics, personality psychology, personality psychology, measurement and experiment. The above is the main content of the college exam. Although psychology seems difficult to learn, as long as you read a book, you will gradually understand some processes. Some books need intensive reading, but others are designed to broaden your knowledge. You don't have to go to so much trouble to cope with the exam. Just master the content of the exam. You can take your time when you pass the exam. o(∩_∩)o ...
If you want to get a consultant qualification certificate, you can sign up for a training class, which is easy to get. But I don't think this is desirable, because many psychological counselors who become monks halfway will have empathy and can't control themselves.