Well, I guess I'll start by just saying that the word 'practical' is in the title for a reason
. As a developer myself, I tend to write books that a developer would really want to use. I like my books to be open on people's desks, not on their bookshelf. So the entire book includes code samples for every one of the actions in the JSTL with a detailed explanation of ways to do things. It also includes ways not to do things, which is just as important. The code samples can be cut and pasted from the download. In fact, I just checked, and in the entire book there's nary a page without code on it. There's also a quick reference guide that can be used during development that has all of the actions with all of their attributes and a quick sample. I'm not aware of any other resource that has it.
Hopefully, all of this combined has made you want to run out and get a copy