Mastering the Core Teachings of the Buddha: An Unusually Hardcore Dharma Book by Daniel Ingram

My practice and life was irreversibly changed. The author provides every practical piece of information that you could possibly need to attain enlightenment. It is the core teachings of the Buddha with almost all dogmatic additions of practice stripped away. I attribute the current state of my perceptions to the increased clarity of meditation practice that this book guided me towards.