http://www.himavanti.org/en/c/himavanti-1/shiva-the-founder-and-owner-of-all-yoga-and-tantra
(small excerpt)
"Shiva (śiva, ziva) aka Mahadeva, Yogeshvara, Bholenath or Nataraja; in Sanskrit: शिव Śiva, meaning "auspicious one" is a major Vedic, Himalayan and Hindu deity, and is the destroyer of evil or transformer among the Trimurti, the Hindu Trinity of the primary aspects of the divine. Shiva is a yogi who has notice of everything that happens in the world and is the main aspect of life. Yet one with great power, he lives a life of a sage at Mount Kailasa. In the Shaiva tradition of Hinduism, Shiva is seen as the Supreme God and has five important works: creator, preserver, destroyer, concealer, and revealer (to bless). In the Smarta tradition, he is regarded as one of the five primary forms of God."