This documentation contains all information about the development (SVN) version of all components. For information on the latest released components, see the "latest" documentation.
The API reference for each component is available through the component links on the left side.
A complete list of all the elements available can be found on the elements overview page and a list of all classes you can find here.
eZ components can be installed using a tar.gz/zip bundle or through the PEAR installer. The article An introduction to eZ components explains both installation methods.