I'm not sure I understand what "the EL is already available" means.
Tomcat 5 supports JSP 2.0 -- JSP 2.0 supports the use of Expression Language (EL) within template text. IIRC, Tomcat 5 will ignore EL on a JSP page if the web app referencs the Servlet 2.3 DTD -- however, you can override this on a given page using the following directive.
<[EMAIL PROTECTED] isELIgnored="false"%>
Then with your page you can use markup like the following where the EL is embedded directly on the page -- it does not require a tag.
<h4>Errors</h4>
<p>
Following are the errors: ${errors}
</p>As far as books go I think that JSTL in Action is excellent -- that being said, you can get a lot of info from both the JSTL specification -- but not as entertaining as JSTL in Action :)
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