1, National Library Reference Alliance Network: This is a website providing various academic resources. You can search the required basic training materials and obtain them through document delivery.

2. China National Digital Library: The library has rich digital resources, including all kinds of e-books, and can search its database for teaching materials related to basic training.

3. China University Courseware Download Center: This website provides all kinds of college courseware and teaching plans, and you may find some teaching materials related to basic training.

4. Higher Education Bookstore: official website of Higher Education Press, where there are many teaching materials. You can read or look up related textbooks for basic training on the Internet.

5. Science Library: The website of Science Press, in which basic training materials related to mathematics, physics and chemistry can be found in its clearly classified resource library.

6. superstar erya: the platform provides video courses and reference materials, and you can find relevant reference books by choosing a course.

7. Large-scale open online course of China University: This platform provides many university courses, including teaching contents related to basic training.