Nectar of Devotion (Pdf)
Bhakti Yoga, according to A.C. Bhaktivedanta Swami Prabhupada, is the simplest and most sublime way to attain God consciousness.
Bhaktivedanta Booktrust Inc (BBTi) 
Bhagavad gita As It Is (pdf)
Bhagavad Gita software provides knowledge of five essential truths including God, individual soul, material world, action, and time. The software highlights the nature of self, consciousness, and universe.
Krishna Book Trilogy 1 (Pdf)
"Krishna Trilogy" software is a collection of books written by A.C. Bhaktivedanta Swami Prabhupada, based on the Srimad Bhagavatam. It describes Krishna's pastimes on Earth 5,000 years ago.
Bhagavad-gita As It Is
Bhagavad-gita is a software that contains knowledge about five essential truths - God or Krishna, individual soul, material world, action in this world, and time. It explains consciousness, the self, and the universe in a lucid manner.