Yes, read the Yoga Sutras of Patanjali. Swami Vivekananda’s commentary on the Yoga Sutras called Raja Yoga is a must. Also read the Siddha Siddhantha Paddhati and Svatmarama’s Hatha Yoga Pradipika. You may also read the Gheranda Samhita. Another excellent commentary on the Yoga Sutras of Patanjali is the Yoga Sudhakara by the great Sadashiva Brahmendra.
