I'm having mixed feelings about JSTL. In many ways, it's really nice. But it's a bugger to debug. And I've had trouble locating good docs.

Here's what I've found:

• From onJava.com. JSTL 1.0: Standardizing JSP, Part 1, What JSP Applications Need, Part 2 and What JSP Applications Need, Part 3.
• From IBM's developerWorks, A JSTL primer, Part 1: The expression language, Part 2: Getting down to the core, Part 3: Presentation is everything and Part 4: Accessing SQL and XML content
• A JSTL reference (PDF), from JSTL in Action. Anyone got this book, BTW? Any good?

Is there any good stuff I'm missing?

BTW, one of the tings that I like about JSTL is that any class implementing the java.util.Map interface can have its attributes referenced by EL's dot operator. Nice.