I highly recommend the following book by Gyatrul Rinpoche, a very highly accomplished lama of the Nyingmapa lineage. "Meditation, Transformation and Dream Yoga" is one of those rare books with all the highest dharma teachings condensed into a very compact text (abt 150 pgs. If you skip the commentary and only read the root texts, it's only 1/3 that length). It's only $12 USD. It's funny to notice how often there are these "ultimate teachings" just laying around for anyone to pick up. One can attain enlightenment in one life just by following these short instructions.
This book is divided into three short parts. The first part is about the four foundations of Mahayana, impermanence, precious human life, and so on, most importantly how to transform adversity into an ally. The second part is about dream yoga, how to recognize the dream-like quality of waking life, and then to apprehend one's dreams as lucid dreams. The third part is about making one's constant state into a deep state of contemplation of the natural state, and how to dissolve all dream-like phenomena into the Clear Light of present awareness.
Get this book.
http://www.amazon.com/Meditation-Transformation-Dream-Gyatrul-Rinpoche/dp/1559391839/ref=sr_1_1?ie=UTF8&s=books&qid=1261163519&sr=8-1Adamant
