Siddhar Rajaswamy: www.gatewaytopeace.org

Thirumantiram by Siddhar Thirumulanathar-
Siddhar Thirumulanathar is our ancient Father of Light. Our "Arakara" mantra was passed on by him to our lineage. His quotes are very intense and are from the roots of tantra, the Tantiram. Below is the link for his sacred wisdom book-

Yoga of Siddhar Bhoganathar- Siddhar Bhoganathar, the father of tantric yoga. A profound book of the deep enriching Siddhar wisdom-

A beautiful blog page of a Siva Siddha Yogi- http://kaivalyapada.blogspot.com/ 

Free download of Autobiography of a Yogi! Please click on this link!

Siddhar Bhoganathar- Shaking Tree, Layne Little- Kundalini Yoga, Spiritual Alchemy, & the Mysteries of the Breath in Bhogar's 7000

Sri Pambatti Siddhar Samadhi Samadhi Peedam. The Samadhi Peedam is located in Sankarankovil, Tamil Nadu, India. It houses the Nirvigalpa Samadhi of Sri Pambatti Siddha, the 18th Siddha who founded the ancient art of siddha medicine.
Sri Pathanjali
Sri Kamalamuni
Sri Sundaranandar
Sri Vaanmeegar alias Valmiki
Sri Machamuni

Vallalar - Vallalar belongs to a line of Tamil saints known as "gnana siddhars". The Suddha Sanmarga was spread and passed on by him not only in theory but mainly in practice by his own way of living which was itself inspiration for his followers.

Advanced Yoga Practice- An open and integrated system of advanced yoga practices is offered here which will unfold natural ecstatic radiance. The techniques act directly through heart, mind, body, breath and sexuality. Practices taught in the lessons include deep meditation using an efficient universal mantra, advanced spinal breathing pranayama methods, and an integration of hatha, kundalini and tantra techniques, all for steadily cultivating inner peace and enlightenment through daily practice. Everyone is encouraged to go at their own speed in taking on new practices. Much attention is devoted in the lessons to developing skills in "self-pacing," with the aim of assisting every practitioner to become self-sufficient in yoga.

Highly recommended book-

Cosmic Harmony, the State of Enlightenment - Stories and Ancient Wisdom of Sages, Saints, Avatars.

http://cosmicharmony.com/

Yoga blog, by a disciple of Swami Sivananda, showcasing the love for yoga and her guru's teachings