To be a network administrator in an Internet cafe, you need to learn and master the knowledge and skills related to network management first. You can improve your professional level by self-study, attending training courses or obtaining relevant certificates. Understand the configuration and maintenance of network equipment, be familiar with the knowledge of network security, and master the methods of troubleshooting and network optimization. In addition, actively participate in the operation of Internet cafes, including maintaining equipment, handling user problems and managing network resources. Constantly improve your experience and ability through practice. You can refer to some books on network management, online tutorials or participate in discussions in related technical communities to gain more learning resources and experience sharing.