Most freshmen don't have much work experience, and the textbook knowledge taught by university teachers is rarely used at work, which means that everyone needs to start exploring from practice. Of course, you don't have to worry about learning. For example, students majoring in computer science will make more progress in two or three months than you have learned in four years of college.
Because with the basic knowledge of the university as the foundation, and then participate in several projects to practice, you will soon become a qualified junior programmer. After a year or two of accumulation, the code will play quickly.