I have started Aikido lessons; yes it is complicated, however, this book reminds me of what we've done in class and helps me to remember the moves. A great introduction to the founder of the system, and the history behind this wonderful Martial Art.
An extremely helpful book to have on the coffee-table.
Although I'm not much of a fan of learning martial arts from books, this one is clear and complements a course of instruction well. It won't make you Steven Seagal, but it will help you understand what you're trying to achieve.