New Extras

I've added a few (promised) resource sections: events, hexadecimal chart, and tools. These already existed in the book (5th edition) but now they have a Web counterpart.

Note that the hexadecimal chart is a 16 column affair, comprised of 8 pairs of number/hex columns. The col element makes it quite simple to style alternate pairs so that the columns stand out and the data is much easier to read. Unfortunately, Netscape 6 (haven't checked 7 yet) does not support styling col elements so I've included the elegant table only as an alternative to the locally formatted, bgcolor bloated (though otherwise useful) hex chart.

Any other resources you'd find useful?