In tantra there are two important poles of energy known as Shiva and Shakti.

In tantra there are two important poles of energy known as Shiva and Shakti. In fact, Shiva and Shakti have various spheres of existence and operation in the cosmos and in the individual. In the ordinary human society man and woman represent Shiva and Shakti respectively. In the universal mind, time and space represent Shiva and Shakti aspects. In spiritual life, mind and prana represent Shiva and Shakti. In hatha yogic texts, these two Shaktis are known as ida and pingala. Ida represents the consciousness and pingala represents the life force, or prana.
These are the relationships between Shiva and Shakti at different levels of evolution and awakening. At one point, Shakti is the disciple and Shiva is the guru; that is, woman is the disciple and man is the guru. At another level, they are not at all different. Shiva and Shakti are intertwined together in one body, one frame and one idea. At yet another level of evolution, Shakti is supreme and Shiva is subservient.
In the tantric tradition, the woman is considered to be higher than the man so far as the tantric initiations are concerned. ‪This should by no means be understood as a social claim. It is purely a spiritual attitude in relation to the evolution of higher consciousness. The frame of a woman, her emotions, and her psychic evolution is definitely higher than that of a man. Awakening of the spiritual force, that is, kundalini, is much easier in the body of a woman than in the body of a man. Generally, a man who goes into the deeper realms of mind and comes out, is not able to bring those experiences back with him, but a woman can. It seems to me that there is very little difference between a woman's inner and outer awareness. When you go very deep into your consciousness, you have certain experiences. But when you return from that deeper state of mind to the gross awareness, a veil falls in between those experiences and the conscious mind. In the case of a woman, this veil does not fall.
Apart from this, the psychic being of a woman is highly charged with spiritual awareness. The external expression that you will find in a woman or in a girl - love for beauty, tenderness, sympathy, understanding, are expressions of her inner state. They say "if all women leave this world, it would become a desert. There would be no colours, perfumes, smiles or beauty. This indicates that the inner awareness of woman is very receptive and ready to explode.
In the realm of kundalini yoga also, the woman's body is charged by a particular centre. Therefore, awakening can take place in a woman's body much more quickly than in the body of a man. Another important point is that woman has always been the main transporter of energy and man the medium. The woman may not be your wife; she could be your mother, daughter or disciple. Mary was Christ's mother. The Mother of Aurobindo Ashram was a disciple. In the same way, in the tantric tradition, there is the story of the sixty four yoginis. The word yogini is the feminine gender of yogi. Now, these yoginis are worshipped all over India. There are sixty four temples dedicated to the sixty four aspects of feminine energy.
In books on tantra, central theme is ~ Shakti is the creator, and Shiva is instrumental. Shiva has never been considered a creator. One of the greatest thinkers and sages of India, Adi Shankaracharya, wrote in the first line of his most famous tantric work, 'Without Shakti, how can Shiva create?' Therefore, the Hindus have accepted the union of man and woman in order to facilitate the process of evolution through tantra.
In tantra, a woman's place is on the left side. Before marriage, the girl sits on the right side, and when the marriage ceremony has taken place, then she sits on the left. She is thus known as vama. In Sanskrit, 'vama' means one who is on the left side. 
There is an old story about Maa Sita and Lord Rama. When Maa Sita became pregnant, she went to live for some time in the ashram of a saint. During this period, one of Sri Rama's duties as emperor was to perform a certain religious ceremony. However, the wise men ruled that he could not perform that ceremony without his wife in attendance. Because Sita could not be present and the ceremony was compulsory, they constructed a statue of her, and when the ceremony was being conducted the statue was placed on Rama's left side! 
Jai ShivaShakti ~ Jai ShankarParvati!!