1. Learn programming languages, such as Python, Java and C++. These languages are one of the most commonly used languages in the IT industry, and mastering them can help you better understand IT technology.

2. Learn data structures and algorithms. These are the two most basic contents in computer science, and they are also the core of many IT jobs.

3. Learn software engineering. Software engineering is a method of organizing and managing software development process, which can help you better understand the process and method of software development.

4. Learn database management. Database management is a very important field in IT industry, which involves how to design, maintain and manage the database system.

5. Learn network security. With the development of Internet, network security becomes more and more important. Learning network security can help you better protect the information security of companies and customers.