Here you can find the most comprehensive English-language collection of information on Toyama ryu battodo on the internet, courtesy of Mike Femal sensei of Konjaku Kioi Dojo in Florida.
Sang Kim sensei's guide to dojo etiquette is quite elaborate and quite good. It's too much to memorize right away probably, but reading through it in its entirety is certainly a good use of your time.
Nakamura sensei's book, The Spirit of the Sword: Iaido, Kendo, and Test Cutting with the Japanese Sword, is now available in English and it is quite good. He has some pretty amazing stories too. You can order it (for in-store or mail purchase) from local independent bookstore The Astoria Bookshop.