Tantrik practices for you
Tantra originated from Shiva and  Shakti, the two supreme cosmic forces of creation and dissolution.  Tantrik practices give quick results and are highly effective. However  they must be practiced under the guidance of an expert guru. If not  performed properly without expert guidance, quite a few of them can have  negative side effects. The repercussions of provoking and playing with  the highest forces can be devastating at times.
However all tantrik practices are not dangerous. There are several  which are quite safe and can be practiced by the common man to get  positive results. We are giving bellow a few which you can practice with  out any fears.
The minimum rules to be observed
1. Worship only after taking bath and wearing clean clothes.
2. Sit facing the East or North.
3. Sit on an asan of Deer Skin, Silk, Woolen or Cotton. Avoid synthetic material.
4. Light a lamp and offer some prasad – even milk or sugar will do.
5. Ladies must avoid the worship during the menstrual period.
6. Never do the worship with any negative sankalpa (purpose) like harming your enemies or to bewitch a woman etc.
7. Before you start the worship, offer a prayer to Ganesha, Guru and Saraswati
Pranapratistha of Yantra
(Installation of Life in a Shri Yantra)
A yantra must be given life (pranapratishta) before starting its  worship. The following, from Nityotsava, describes the process of  infusing life into Shri Vidya. The rite installs the 35 tattvas into the  yantra and gives the yantra the full set of senses and the Antahkarana,  or subtle body. It is said that engraving a Shri Yantra on gold is said  to hold good for life, on silver for seven years. The process also  imbues the yantra with the matrika, the letters of the Sanskrit alphabet  which are the goddess as sound.
The Yantra Gayatri is: Yantrarajaya Vidmahe Mahayantraya Dhimahi Tanno Yantrah Prachodayat.
Brahmna-Vishnu-Maheshvara are the Rishis of this great mantra installing life into the Shri Yantra.
Rg, Yajur, Sam and Atharva are the Metres.
Consciousness is the Devata.
Am is the Bija, Hrim the Shakti, Krom the Kilaka.
The application is installation of life into the Shri Chakra.
Karanyasa
Aim Hrim Shrim Am Kam Kham Gam Gham Nam to Earth, Water, Fire, Air and Aether. – Am to the thumbs Namah.
Im Cham Ccham Jam Jham Nam to Sound, Touch, Sight, Taste, Smell. – Im to the index fingers Namah.
Um Tam Tham Dam Dham Nam to Hearing, Touch, Eyes, Tongue, Nose. – Um to the middle fingers Namah.
Um Tam Tham Dam Dham Nam to Speech, Hands, Feet, Genitals, Anus. – Aim to the ring fingers Namah.
Om Pam Pham Bam Bham Mam to Talking, Giving, Moving, Enjoying, Excreting. Aum to the little fingers Namah.
Am Yam Ram Lam Vam Sham Sham Sam Ham Lam Ksham to Manas (mind), Buddhi  (intellect), Ahamkara(ego), Thought, Inner Cause. – Ah to the palm and  back of the hands Namah.
Aim Hrim Shrim Om Am Hrim Krom Yam Ram Lam Vam Sham Sham Sam Haun Ham Sah may Life exist here in the Shri Chakra!
Om Am Hrim Krom Yam Ram Lam Vam Sham Sham Sam Ham Ham Sah my individual existence be here in the Shri Chakra!
Om Am Hrim Krom Yam Ram Lam Vam Sham Sham Sam Ham Ham Sah may all the senses be here in the Shri Chakra!
Om Am Hrim Krom Yam Ram Lam Vam Sham Sham Sam Haum Ham Sah, may  Speech, Mind, Eyes, Ears, Tongue, Nose, Breath come inside this Shri  Chakra! May Happiness stay long here! Svaha.
Internal meditations
Yantras may also be visualised internally. That, for example, is the  case with the Shri Yantra, with the different mandalas starting at the  base of the spine and going to the top of the head.
Different rituals exist for the purification of a yantra for the  eight materials mentioned above. This which follows is drawn from the  Devirahasya. Shiva is the Seer, Trishtubh the Metre, Parashakti the  Devata, Shrim the Bija, Hrim the Shakti and Klim the Peg. The  application is the purification of the given yantra.
After doing hand and limb nyasa, one should meditate on the throne of  the given Devi as being in one’s heart. One should draw, engrave, or  paint the yantra, and place it on a gold colour pedestal, installing  breath into it.
It can be smeared with Kunda, Gola or Udbhava flowers or with the eight scents. The mantra differs for each material:
Gold: Aim Sauh Aim Sauh Chakreshvari Yantram Sauvarnam Shodhaya  Shodhaya Svaha. (Aim Sauh Aim Sauh, O Lady of the Chakra, Purify! Purify  the gold yantra! Svaha)
Silver: Om Rum Om Rajatam Yantram Shodhaya Shodhaya. (Om Rum Om Purify! purify the silver yantra)
Copper: Om Krom Om Strim Om Krom Tamreshvari Yantram Me Shodhaya. (Om  Krom Om Strim Om Krom, O Lady of Copper, purify the copper yantra for  me!)
Crystal: Om Shrim Hrim Om Kulambike Shodhaya Shodhaya.
Birch bark: Om Hum Shrim Hrim Prim Ruddhesvari Parayantram Shodhaya.  (Om Hum Shrim Hrim Prim O Lady of Trees, purify the yantra!)
Bone: Om Aim Klim Sauh Kapalamalini Yantram Shodhaya Svaha. (Om Aim Klim  Sauh O Thou garlanded with skulls, purify the yantra! Svaha)
Hide: Om Shrim Om Aim Klim Citasane Yantram Shodhaya Svaha. (Om Shrim Om  Aim Klim O Thou Whose seat is the Pyre, purify the yantra! Svaha)
Vishnu Stone (Shalagrama): Om Hsau Aim Sauh Klim Shrim Shrim Nitye  Vishnu Shila Yantram Shodhaya. (Om Hsau Aim Sauh Klim Shrim Shrim, O  Eternal One, purify the Vishnu Stone Yantra )
After using the appropriate mantra, the yantra should be placed on a  pedestal (pitha), and bathed with the substances previously described,  whilst the appropriate root mantra is recited. One should then offer  scent and flowers, and should worship the appropriate Devi in the usual  form within the yantra. This all should be done at night.
Carrying a Yantra. This is considered to be a highly potent way of  concentrating magical power. The time to do this is during an auspicious  astrological period. The yantra should be drawn using the eight Kaula  perfumes. Outside the yantra the root mantra should be written.
On the outside of this the armour (kavacha) and 1000 names should be  written. The Devi should be invoked into the yantra in due form. All  good substances are to be used. The yantra is then entwined with gold  and silver thread, and placed into a metal holder and may be worn on the  person.
Yantras should always be used on the level. If drawn on paper the  colours preferable are red, orange, yellow or a combination of these. A  yantra without bija mantras is dead. They can be drawn to whatever size  is required.
The two main types of yantra are Bhu and Meru. The former is flat,  two dimensional, the latter is of pyramidal form. When not in use they  should be stored carefully. Metal ones should be regularly cleaned to  prevent corrosion &c. In worship they should be placed level on a  pedestal or pitha. This may be as ornate or as simple as required.