Usually, I have four or five books going at once.
Occasionally, I inhale a book in one sitting. It happened today. Pema's practice of Tonglen does not require special knowledge of esoteric Tibetan terms.
It's as simple as breathing, which does not mean it's easy, but so very worth it, IMO

This is sort of a "best of" Pema, taken from her other books. She writes simply with humour and grace. Aaaaahhhhh.... Mmmmmmm..... Yummie!

http://en.wikipedia.org/wiki/Pema_Chodron