Yookoso is a popular two-volume textbook that is used in many U.S. Universities' Japanese language curriculum. Overall, they are solid books for learning the basic grammatical structure of Japanese but they are a bit heavy (literally not figuratively). Thus, I decided to compile the key points covered and make them available here on the Web. I hope you enjoy.

Caveat: These notes have not been checked for accuracy by any professional Japanese language educator. Since they were transcribed from the textbooks directly they should be more or less accurate, but I make no warranties to that effect (and, hey, they're free!). Of course, please let me know if you find any errors.