Students are surrounded by a wealth of information—in print, online, in videos and podcasts, even face to face! Much of this information is excellent, but some is of dubious quality. This can make finding the information you need to support your ideas exciting, but it also means you will have to develop a research strategy and sift possible sources carefully. What you are writing about, who will read your writing project, and the type of writing you are doing (a story for your college newspaper, a proposal for your employer, or a research project for your U.S. history course) will help you decide which types of sources are most appropriate. Does your writing project require you to depend mainly on secondary sources—like books and articles that analyze and summarize a subject—or develop primary sources, such as interviews with experts, surveys, or observational studies you conduct yourself and laboratory reports, historical documents, diaries, letters, or works of literature written by others? Whatever sources you decide will best help you support your claims, this chapter will help you find or develop the resources you need.