Kalu Rinpoche Gem Ornament of Oral Instructions (PDF)

In this book Kalu Rinpoche teaches on the three yanas (Foundation, Mahayana, and Vajrayana), then goes through the four Ngondro Practices (Prostrations, Vajrasattva, Mandala, and Guru Yoga) practices. He also explains the layperson's vows, the Bodhisattva vow, and the tantric vows.  Finally, he gives a good description of Shamatha and Mahamudra meditation.