First, this was just too cute not to share:
Second, Project Gutenberg has a book on tea that you might find worthwhile. It gives some background on the Asian (or at least Japanese) tea culture. It's not a long book, but it is an interesting read, and you can't beat free!
The Book of Tea, by Okakura Kakuzo (or Kakuzo Okakura, depending on where you look)
Available as:
Plain text
PDF (at AOL)
(Requires a PDF reader. If you don't have one, try Foxit Reader. I find it much better than Adobe's.)
HTML (at Kells Craft)