Check out these great sources on all things tea!
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
World of Tea. Chadao.blogspot.co.uk