You can read it for free at Oreilly's Chimera labs
Run through the book and you will have a solid foundation to start playing around on your own for basic visualizations and charts.
This was also posted on HN a while back:
d3 is not dependant on jquery and covers a lot of the same basic DOM manipulation. You also need to learn some super basic css to theme things.
Also in book: http://shop.oreilly.com/product/0636920026938.do
Also FYI, the most recent purchase I made was a book that made HN's front page last week: interactive Data Vizualization for the Web. And I highly recommend it
Get dozens of book recommendations delivered straight to your inbox every Thursday.