[1] https://www.amazon.com/Opening-Hand-Thought-Foundations-Budd...
[2] https://www.amazon.com/Zen-Mind-Beginners-Informal-Meditatio...
http://www.amazon.com/Zen-Mind-Beginners-Shunryu-Suzuki/dp/1...
Not specifically related to meditation, but The Tao of Pooh is still the best book I know of that deals with the concepts behind this stuff. I re-read these books whenever I lose my way, which happens more often than I'd like to admit ;)
Body by Science — Doug McGuff, MD and John Little [2]
1. http://www.amazon.com/Zen-Mind-Beginners-Shunryu-Suzuki/dp/1...
2. http://www.amazon.com/Body-Science-Research-Strength-Trainin...
Which influenced Steve Jobs, among others. It's a great read.