A) What do you understand from the words "Tantra" and "Tantrik?
Tantra (Sanskrit: तन्त्र) is a religious philosophy according to which Shakti is usually the main deity worshipped, and the universe is regarded as the divine play of Shakti and Shiva. The word Tantra also applies to any of the scriptures (called "Tantras") commonly identified with the worship of Shakti. Tantra deals primarily with spiritual practices and ritual forms of worship, which aim at liberation from ignorance and rebirth.
Rather than a single coherent system, Tantra is an accumulation of practices and ideas which is characterized by the use of ritual, by the use of the mundane to access the supra-mundane, and by the identification of the microcosm with the macrocosm.
(ii) Tantrika, or tantric practitioner:
In the process of working with energy, the Tantrika, or tantric practitioner, has various tools at hand. These include yoga, to actuate processes that will "yoke" the practitioner to the divine.
Also important are visualizations of deity, and verbalisation or evocation through mantras, which may be construed as seeing, listening internally, and singing power into a stronger state within the individual, resulting in an ever-increasing awareness of cosmic vibration through daily practice.
Identification with and internalisation of the divine is enacted, through a total identification with deity, such that the aspirant "becomes" the Ishta-deva or meditational deity.
B) Do you think that Tantra Vidya is really effective and has Power ?
Yes and the tantrik worship of these most powerful Vidyas must be practiced only under the guidence of a siddha Guru.
C) What objectives and Results can be achieved by the Tantra ?
Tantrism is a quest for spiritual perfection and magical power. Its purpose is to achieve complete control of oneself, and of all the forces of nature, in order to attain union with the cosmos and with the divine.
Long training is generally required to master Tantric methods, into which pupils are typically initiated by a guru.
Yoga, including breathing techniques and postures (asana), is employed to subject the body to the control of the will. Mudras, or gestures; mantras or syllables, words and phrases; mandalas and yantras, which are symbolic diagrams of the forces at work in the universe, are all used as aids for meditation and for the achievement of spiritual and magical power.
During meditation, the initiate identifies himself with any of the numerous Hindu gods and goddesses representing cosmic forces. The initiate visualizes them and takes them into his mind so that he unites with them.
D) Dasa Mahavidyas:
In Tantra, worship of Devi-Shakti is referred to as a Vidya. Of the hundreds of tantrik practices, the worship of the ten major Devis is called the Dasa Mahavidya. These major forms of the goddess are described in the Todala Tantra. They are Kali, Tara, Maha Tripura Sundari (or Shodasi-Sri Vidya), Bhuvaneshvari, Chinnamasta, Bhairavi, Dhumavati, Bagalamukhi, Matangi, and Kamala.
"Kali Tara mahavidya Sodashi Bhuvaneswari.
Bhairavi Chhinnamasta cha vidya Dhumavti tatha.
Bagala siddha vidya cha Matangi Kamalatmika.
Etaaha dasamahavidyaaha gupta vidyaaha prakeertitaaha."
Seated on a corpse, greatly terrifying, laughing loudly, with fearful fangs, four arms holding a cleaver, a skull, and giving the mudras bestowing boons and dispelling fear, wearing a garland of skulls, her tongue rolling wildly, completely naked (digambara - clad in the directions), thus one should meditate on Kali, dwelling in the centre of the cremation ground.
The Kali Mantra as given in the Mantra Mahodadhi is:
"Kreem Kreem Kreem Hum Hum Hreem Hreem Dakshine Kaalika
Kreem Kreem Kreem Hum Hum Hreem Hreem Swaha"
It bestows the eight supernatural powers.
Tara is described as seated in the pratyalidha asana, on the heart of a corpse, supreme, laughing horribly, holding cleaver, blue lotus, dagger and bowl, uttering the mantra Hum, coloured blue, her hair braided with serpents, the Ugratara. She bestows all supernatural powers.
Her mantra is given in Mantra Mahodadhi as: "Om Hreem Streem Hum Phat"
3) Sri Vidya:
The worship of Devi in Shreechakra is regarded as the highest form of the Devi worship. The Bindu in the center of the Shreechakra is the symbolic representation of the cosmic spiritual union of Shiva and Shakti. Apart from that the Shreechakra also embodies countless number of deities and represents the whole of creation. Hence by worshipping the Devi in Shreechakra one is actually worshipping the highest ultimate force in the Tantrik form.
The Shodashakshari mantra is one of the most guarded secretes of tantra. Usually the Guru gives it to a highly deserving and tested disciple. However, Shreechakra can also be worshipped by other Devi mantras.
worship the Sri Yantra 108 times with the simple Devi Mantra:
"Om Aim Hreem Shreem Sri Lalita Tripurasundari Padukam Poojayami Namah"
Or better still with the Panchadasakshari Mantra, which is one of the greatest mantras of Devi and next only to the Shodasi Mantra:
"Ka E i La Hreem - Ha Sa Ka Ha La Hreem - Sa Ka La Hreem"
Bhuvaneshwari - Means the Queen of the Universe, Maya, power of love, peace within, as void. She is like the red rays of the rising sun, with the moon as her diadem, and with three eyes, a smiling face, bestowing boons, holding a goad, a noose and dispelling fears. On the right side of Bhuvaneshvari, who in the heavens, on earth, and in the underworlds is known as the Adya, worship Tryambaka.
The mantra is: "Om Hreem Bhubaneswaraye Hreem Namah"
Her left foot forward in battle, she holds her severed head and a knife. Naked, she drinks voluptuously the stream of the blood nectar flowing from her beheaded body. The jewel on her forehead is tied with a serpent. She has three eyes. Her breasts are adorned with lotuses. Inclined towards lust, she sits erect above the god of love, who shows signs of lustfulness. She looks like the red China rose. - Chinnamasta Tantra
Her mantra yields all desired benefits quickly:
"Om Shrim Hreem Hreem Aim Vajra Vairochaniye Shrim Hreem Hreem Phat Svaha"
Tripura Bhairavi is Supreme Energy, Supreme Goddess of speech, as Tapas, as woman warrior. Her head garlanded with flowers, she resembling the red rays of 1,000 rising suns, smeared with red, holding milk, book, dispelling fears and giving boons with her four hands, large three eyes, beautiful face with a slow smile, wearing white gems.
The mantra is: "Om Bhairavi Saham"
The colour of smoke, wearing smoky clothes, holding a winnowing basket, dishevelled clothes, deceitful, always trembling, with slant eyes, inspiring fear, terrifying.
The Dhumavati Mantra as per Mantra Mahaodadhi:
"Dhum Dhum Dhumavati Swaha"
She is described as the Devi with three eyes, wearing yellow clothes and gems, moon as her diadem, wearing champaka blossoms, with one hand holding the tongue of an enemy and with the left hand spiking him, thus should you meditate on the paralyser of the three worlds.
Bagalamukhi means "The Crane-Headed One". This bird is thought of as the essence of deceit. She rules magic for the suppression of an enemy's gossip. These enemies also have an inner meaning, and the peg she puts through the tongue may be construed as a peg or paralysis of our own prattling talk. She rules deceit which is at the heart of most speech. She can in this sense be considered as a terrible or Bhairavi form of Matrika Devi, the mother of all speech. According to Todala Tantra, her male consort is Maharudra.
Seated on the right of Bagala is the Maharudra, with one face, who dissolves the universe.
The Bagalamukhi Mantra as per Mantra Mahodadhi:
"Om Hleem Sarva Dusthaanaam Vaacham Mukham"
Dusky, beautiful browed, her three eyes like lotuses, seated on a jewelled lion-throne, surrounded by gods and others serving her, holding in her four lotus-like hands a noose and a sword, a shield and a goad, thus I remember Matangi, the giver of results, the Modini.
The Matangi Mantra as per Mantra Mahaodadhi:
"Om Hreem Aim Shreem Namo Bhagavati Ucchisthachandali Sri Matangeswari Sarvagyanavashamkari Swaha"
With a smiling face, her beautiful lily-white hands hold two lotuses, and show the mudras of giving and dispelling fear. She is bathed in nectar by four white elephants and stands upon a beautiful lotus.
The Mantra as per Mantra Mahaodadhi:
"Hasauh Jagatprayutai Swaha"