There are many literary organizations that can help writers in a variety of ways. Poets & Writers offers a number of resources that can be useful to writers, including Poets & Writers Magazine; pw.org; the Readings/Workshops program, which funds writers in New York State, California, Atlanta, Chicago, Detroit, Houston, New Orleans, Seattle, Washington, D.C., and Tucson; and Information Services, which provides answers to questions writers may have about publishing. Information Services also edits and maintains The Directory of Poets & Writers.
There are both regional and national literary organizations that help writers by providing them with resources, technical assistance, grants, awards, readings and workshops. The Academy of American Poets supports poets at all stages of their careers. PEN American Center defends freedom of expression and offers grants to writers and translators. The Authors Guild is a national membership organization that provides advice on contracts. The National Writers Union is a labor union representing freelance writers.
You can find other literary organizations by conducting an online search, contacting your local librarian, checking with the creative writing or English department of a local college or university, and browsing in the resource sections of bookstores.