Based on the standards of information literacy education at home and abroad, this book integrates the methods of document information retrieval, the application of network information skills, the writing and submission strategies of academic papers, systematically explains the basic knowledge and skills of document information retrieval, and introduces the characteristics and distribution of various documents in a brand-new way, the arrangement and organization rules and usage methods of some famous traditional document retrieval tools, and the electronic document information retrieval technology. The characteristics and usage of famous bibliographies or abstract databases, citation databases and full-text databases at home and abroad, the reasonable use scope of paper and electronic documents, the writing norms, writing methods and submission skills of academic papers, etc.