I have read The Power of Now and A New Earth. I have also listened to the audio from retreats. This book condenses the teachings and provides a simple guide. I would not recommend this to someone who is unfamiliar with Eckhart's teachings as someone new to these teachings would probably prefer more background. I plan to keep this as my guide on seeking and keeping presence.
Listening to "Stillness Speaks", written and narrated by Eckhart Tolle was a wonderful experience. This audiobook actually gives you the chance to contemplate the key learnings in real time, by introducing the much needed silence during the audiobook. I needed to get used to that for a bit, but then found it to be an excellent way to "absorb" this book. Eckhart Tolle would probably tell me I still used too much cognitive reasoning instead of just "being", but hey, I am making progress. :-)
There are so many profound insights in this book, you have to listen to it for yourself. Multiple times.
It exceeded my expectations. The most memorable moment is when he was talking about sacredness and I was just reminded how sacred we are. And the fact that we are alive means that we are enough. And the emotional states we go through are transient. We are not pain, we are not hunger, we are not sadness, we are life. "You don't have a life, you are life."
When you listen to stillness speaking you have nothing to say. In that new found silence is a feeling of gratitude to the master - Almighty - for having gifted this experience.