Two classic titles presenting introductions to Buddhism:  

Wisdom Energy 
Basic Buddhist Teachings
Lama Thubten Yeshe and Lama Zopa Rinpoche

Wisdom Energy is a simple and compelling introduction to Buddhism by two Tibetan lamas renowned for their insight and skill in teaching Westerners. Containing an entire meditation course, it goes to the heart of basic Buddhist practice and discusses the meaning and purpose of meditation, the causes of dissatisfaction and unhappiness, and the methods for subduing them and gaining control over our minds and lives.

This special 25th Anniversary Edition of Wisdom Energy preserves the power, humor, and directness of the lamas' first teaching tour of North America. It gives the reader the feeling of an intimate audience with two highly respected teachers.

Buddhism for Beginners

By Venerable Thubten Chodron

Buddhism for Beginners answers the fundamental questions and issues that arise in the minds of modern Western individuals who are new to this tradition of practical spirituality. Written in clear and engaging language, this book presents the Buddhist approach to the fundamental issues and concerns of daily life. Thubten Chodron guides us through the basic tenets of Buddhism, encouraging and instructing us in how to live a more peaceful, mindful and satisfying life. She untangles our confusions and leads us through the most basic aspects of this rich, living spiritual tradition.