Is there a good online introduction/overview to XPath 2.0?

Question

Basically I want something I can refer people to that covers the main differences to XPath 1.0 ('for' and 'if' statements and the use of sequences), in a sort of 'bluffers guide' or cheatsheet format.

Answer 1

W3Shools has a good one that should get you started, good old W3C which is useful but dry, and one other I haven't used but I thought might be worth a look.

Answer 2

I found XPath - Tutorial at Tizag quite useful, also Mozilla XPath Tutorial.

Applied to HTML, I use XPather extension for Firefox (Firebug has increasing support of XPath too).
In standalone, I just discovered Exchanger XML Lite editor (recommended on this site!), and it seems very nice (for XPath and lot more).