Mysterious India
Sadhus are devoted to Vishnu and are a later development than the Shaivite. Commonly called Vairagi (detached ones), they are members of various schools of Bhakti (devotion). They do not emphasize the ascetic extremes of the Shaivites. Their common identifying mark is a white V drawn on the forehead, with an added line in either white or red in the centre. Hinduism, the world’s oldest religion, has no beginning–it precedes recorded history. It has no human founder. It is a mystical religion, leading the devotee to personally experience the Truth within, finally reaching the pinnacle of consciousness where man and God are one. Hinduism has four main denominations–Saivism, Shaktism, Vaishnavism and Smartism. there are said to be three hundred and thirty-three million Gods. Hinduism is a mixture of sects, cults and doctrines which have had a profound effect on Indian culture.
Journal Edge 
Thank you for adding to my understanding of the religion. There is no doubt there is something within my soul where a harmony rests.
Hinduism is not the worlds oldest religion.
Do you know the religions of aborigines of Australia is more than 15000 years?
thanks for advice and provide info about Oldest one.