The worship of Ganapati (Ganapatyam) as a remover of all impediments, is one of the six forms of worships(Shanmatha) established by Adi Sankara. Ganapati is the primordial deity in Ganapatyam.
The worship of Ganesha is considered complementary with the worship of other deities. Hindus of all sects begin prayers, important undertakings, and religious ceremonies with an invocation of Ganesha, because of Ganesha’s role as the god of beginnings.
But although most Hindu sects do revere Ganesha, the Ganapatya sect goes further than that, and declares Ganesha to be the supreme being. Ganapatya is one of the five principal Hindu sects which focus on a particular deity, alongside Shaivism, focused on Shiva, Shaktism, focused on Shakti, Vaishnavism, focused on Vishnu, and Saura, focused on Surya. While Ganapatya is not as large a sect as the other four, it still has been influential.
Ganesha is the embodiment of OM the symbol of great god and he is the delight of the gods and the beloved of humanity. He is the playful god of the young and the old. He is the god of auspiciousness, the beginning of all beginnings savior of all that is good.
The most striking feature of Ganesha is his elephant head. According to the puranas the head of a boy was removed and replaced by an elephant’s head. Symbolic of auspiciousness, strength and intellectual prowess. Ganesha though a powerful deity, is similarly loving and forgiving and moved by the affection of his devotees.
The most interesting feature of Ganesha is his trunk, which represent ‘ohm or the pranava mantra the sound from which the world was created. Ganesha himself is believed to be the embodiment of ‘ohm’ and the curved trunk is the symbolic of the pranava.
The huge belly also signifies that the Ganesha swallows the sorrows of the universe and protect the world.The mouse, Ganesha’s vehicle symbolizes the petty desire of men which nibble away at their personalities and their inner selves.
Ganesha sometimes wears the 3rd day crescent moon on his head. Symbolically this crescent without blemishes leads human beings to attain pure knowledge and in the spiritual enlightenment.
The snake wom around Ganesha’s stomach is symbolic of cosmic energy.According to Ganesha’s cult with the sound of ‘Om resounding through the universe, Ganesha appeared against the light of the first dawn. He came in the form of Nrithya Ganapathy dancing in great abandon, his movements beyond man’s understanding.
All the auspicious events begin with an invocations to this deity. Image of Ganesha are there for found everywhere.
Even more important is his adaptability in the modern contest. There are no strict or rigid rules or canons of the shastras binding down his worship, as has happened is the case of other deities.
Ganesha was the scribe who wrote the epic Mahabharatha. Sage Vyasa the author of this epic, was advised by Brahma to ask Ganesha to be the scribe to whom he could dictate the epic inverse form. Ganesha used his broken tusk to write the Mahabharatha.
He can be worshiped in any form.Ganapathyam-Ganesha Stotras-Stotra Veda is providing collection of Ganesha Mantras and Stotras in Various Languages.