A comprehensive look at many different meditation traditions and styles from different religions and beliefs, along with their development, prominent figures in history, and explanations of how to practice each meditation style. It includes easy meditation for beginners all the way up to more advanced techniques.

I found a lot of good ideas about how to deepen my meditation practice, and I was inspired by many of the concepts and quotes, but some of the religious and mystical practices were way too creepy and/or strange.