This chapter presents the options for providing user assistance in Eclipse, including how to write help pages, how to run an external help server, how to embed help in an RCP application or run it as standalone, and how to write cheat sheets to allow the user to step through standard operations. By the end of this chapter, you will know about the different aspects to the user assistance options in Eclipse and be able to contribute plug-ins that add an interactive documentation to a standalone Eclipse environment, an RCP application, or via a website.