I have been to the author's website many times, and liked it. The book has lots more information than the website, which is massive. It is interesting to read about so many of these events. Most of the descriptions are short, but considering there must be over 5,000 events, that is understandable.
There are quite a mix of illustrations that match an event on their page.
The sections on the tribal name meanings and the Indian "moons" was both fascinating, and fun.
The index is one of the most comprehensive I have ever seen.