Research related to the learning interests and needs of clinical researches of nurses revealed that nearly half of clinical nurses do not know how to collect research materials, libraries lack the resources they need, and nurses need help and direction on how to conduct research. However, researchers must be aware of all information resources and how to access. To help solve these problems, to know how to access information through Internet. The categories of books, periodicals, dissertations and ground projects are covered herein, which are the most important resources for research. Furthermore, the related databases are also covered and compare against one another. This study focuses on concepts of literature retrieval and how to get current information.