The Chimera User's Guide has three main parts, which are interconnected:
Chimera documentation, including the User's Guide, is bundled with each download. Your local copy of the documentation can be accessed and searched from the Chimera Help menu. We recommend using the bundled documentation because it is synchronized with your installed version of Chimera. Latest production release and development versions of the User's Guide are available from the Chimera home page documentation index. Please see the Chimera home page for other types of information.
This locally installed Chimera documentation can be searched using "Search Documentation" in the Chimera Help menu.