Check out these great sources on all things tea!
Book: The Book of Tea by Okakura Kakuzo. Tea Users Guide by Tony Gebely. Stories From a Tearoom Window by Shigenori Chikamatsu. Tea Life, Tea Mind, by Soshitsu Sen XV. Tea: History, Terriors, Varieties, by Kevin Gascoyne. The Tea Enthusiast’s Handbook: A Guide to Enjoying the World’s Best Teas, by Mary Heiss.
Websites: World of Tea. Chadao.blogspot.co.uk