The main objective of Yogi Ramacharaka was to increase the level of consciousness of people and to aware people of their true selves. This work gives the highest yogi teachings regarding the absolute and its manifestations. This book contains 12 lessons in Raja Yoga (each is followed by mantras for meditation) and 12 lessons in Gnani Yoga (Jnana Yoga). These lessons are plenty of very profound thought, and you will not leave this fantastic teaching without spiritual growth. This is a book to be read continually, as with all Yogi Ramacharaka's works, each reading reveals more of the mystery of the self and your relationship to the Absolute. If you are on the path with yoga this compilation is a must read. Two compiled texts:  1/ A Series of Lessons in Raja Yoga  2/A Series of Lessons in Gnani Yoga
EXCERPT :"The Yogi Philosophy may be divided into several great branches, or fields. What is known as "Hatha Yoga" deals with the physical body and its control; its welfare; its health; its preservation; its laws, etc. What is known as "Raja Yoga" deals with the Mind; its control; its development; its unfoldment, etc. What is known as "Bhakti Yoga" deals with the Love of the Absolute-God. What is known as "Gnani Yoga" deals with the scientific and intellectual knowing of the great questions regarding Life and what lies back of Life-the Riddle of the Universe. Each branch of Yoga is but a path leading toward the one end-unfoldment, development, and growth."
Publishers' Notice  PART I. A SERIES OF LESSONS IN RAJA YOGA  The First Lesson. THE "I."  The Second Lesson. THE EGO'S MENTAL TOOLS.  The Third Lesson. THE EXPANSION OF THE SELF.  The Fourth Lesson. MENTAL CONTROL. The Fifth Lesson. THE CULTIVATION OF ATTENTION. The Sixth Lesson. CULTIVATION OF PERCEPTION.  The Seventh Lesson. THE UNFOLDMENT OF CONSCIOUSNESS.  The Eighth Lesson. THE HIGHLANDS AND LOWLANDS OF MIND. The Ninth Lesson. THE MENTAL PLANES. The Tenth Lesson. SUB-CONSCIOUSING. The Eleventh Lesson. SUBCONSCIOUS CHARACTER BUILDING.  The Twelfth Lesson. SUB-CONSCIOUS INFLUENCES. 
PART II. A SERIES OF LESSONS IN GNANI YOGA  The First Lesson. THE ONE The Second Lesson. OMNIPRESENT LIFE The Third Lesson. THE CREATIVE WILL The Fourth Lesson. THE UNITY OF LIFE The Fifth Lesson. THE ONE AND THE MANY  The Sixth Lesson. WITHIN THE MIND OF THE ONE The Seventh Lesson. COSMIC EVOLUTION The Eighth Lesson. THE ASCENT OF MAN The Ninth Lesson. METEMPSYCHOSIS The Tenth Lesson. SPIRITUAL EVOLUTION The Eleventh Lesson. THE LAW OF KARMA  The Twelfth Lesson. OCCULT MISCELLANY Conclusion