User Guide for EL-Functors 1.0.2 » Further Documentation

The javadoc generated EL-Functors API documentation is here, or can be accessed on-line from here
The library and the source code are available here.
The Java™ EE 5 Tutorial has some basic information about JSP/JSF and the unified EL.
From here you can download the JavaServer Pages™ 2.1 final specification (jsp-2_1-fr-spec.pdf), including the Expression Language specification.
From here you can download the JavaServer™ Faces 1.2 final specification (jsf-1_2-fr-spec.pdf).
This project is hosted at sourceforge. Any bug reports, enhancement requests, or general discussion can be submitted via the standard sourceforge mechanisms.