Online tutorials and video courses: You can search for "information system supervisor" on popular online education platforms, such as Netease Cloud Classroom, Tencent Classroom and Massive Open Online Course Network. There may be some free or paid video courses on it.

Soft Test Website: You can visit China Computer Technology Vocational Qualification Network (* * *), which is an official soft test information publishing platform. The above may provide some study materials and preparation suggestions for the information system supervisor.

Books and Textbooks: Buy a textbook or tutorial about the information system supervisor, which usually includes a video tutorial or an access code for online resources. You can find these materials on e-commerce platforms or bookstores.

Forums and communities: Join some forums or communities related to the soft test, such as CSDN and Zhihu. There are many candidates here to share experiences, exchange resources and discuss problems. You may find some useful video course resources or ask others for help.

Training institution: Enroll in the professional soft test training class, and you can systematically learn the knowledge of the information system supervisor and get the guidance of the teacher. Although it may cost some money, it can often improve your study effect and pass the exam.

Please note that the information I provide here may become invalid over time. It is suggested to pay attention to the latest information and resources when looking for resources. I wish you good preparation and good results!