1. Understand the basic concepts: First of all, you need to understand the basic concepts of information security, including cryptography, network security, system security and so on. You can learn these concepts by reading related books or online tutorials.

2. Learn the basics of network security: network security is an important part of information security. You can learn the basic knowledge of network protocols, firewalls and intrusion detection systems, and learn how to protect the network from attacks.

3. Master common attack technologies: Understand common network attack technologies, such as DDoS attack, SQL injection, cross-site scripting attack, etc. , can help you better understand the challenges and countermeasures of information security.

4. Learn the basic knowledge of cryptography: cryptography is the foundation of information security. Learning the basic knowledge of encryption algorithm, symmetric encryption and asymmetric encryption can help you understand how to protect the security of data.

5. Practice: Theoretical knowledge is only the foundation, and only through practice can we better understand and apply what we have learned. You can try to build your own virtual network environment and conduct practical operations such as penetration testing and vulnerability scanning.

6. Attend training courses or certification exams: Attend relevant information security training courses or certification exams, such as CompTIASecurity+ and CEH(certifedethicalhacker), which can improve your professional level and employment competitiveness.

7. Pay attention to information security trends: The field of information security is developing rapidly, and new threats and technologies are constantly emerging. Paying attention to the latest trends in the field of information security and learning the latest security technologies and defense methods can help you keep the motivation of learning and progress.

In short, beginners need to establish a solid theoretical foundation and improve their skills and knowledge through practical operation and continuous learning.