There are many types of meditation. The one definition that fits almost all types is..."Consciously directing ones attention to alter the state of consciousness."  There's no limit to the things one can direct the attention toward... symbols, sounds, colors, breath, uplifting thoughts, spiritual realms, etc. Meditation is simply about attention... where one directs it, and how it alters the consciousness.
 

PURPOSE OF MEDITATION
Traditionally meditation was (and still is) used for spiritual growth... i.e. becoming more conscious; unfolding the inner Light, Love, & Wisdom; becoming more aware of the True Self.
More recently, meditation has become a valuable tool for finding a peaceful oasis of relaxation and stress relief in a demanding, fast-paced world.
 

THREE MAIN KINDS OF MEDITATION 

1. Single pointed meditation

2. Contemplative meditation

3. Visualization meditation
 

1. Single pointed meditation:
To fix ones mind on something for an extended time is most commonly known meditation. But, there are great many different ways of doing that.  Even in the Tibetan Buddhism there are so many different kinds of instructions to how to do that. The method we chose here are most common and prevailing one to introduce some one to meditation.
 

Breathing Meditation:
Very common method of meditation taught in many religious traditions.  As a result you will relax, feel much better and avoid distraction.
 

Light Meditation:
A meditation method found both in Sutra and Tantra, common technique of meditation on lights is employed in various faiths.

2. Contemplative meditation:
Contemplation is other main portion of Tibetan Buddhist Mediation. It is one of the great ability of mind or consciousness. The degree of contemplation mind is capable to do is different from an individual to other. In general human mind is gifted with much higher capability to contemplate compared to many other being. Unfortunately, whenever it comes to the meditation, this great capability of human mind is over seen or ignored. Tibetan Buddhism provides well established techniques and instructions for how to apply this capability of human mind in meditation.
 

Precious human life "a golden chance"
Contemplate on and realize why to cherish and take good care of your body, the reasons are many times stronger and solid then common self-cherishing and self-grasping egoistic thought.
 

Suffering
Contemplate on and realize what lies behind the common word suffering and how prevailing and penetrative it is. So should we generate strong willingness to be free from the suffering.
 

Willingness to attain liberation
Contemplate on and realize what liberation means and how to generate really strong willingness to achieve it.
 

Great Compassion
Contemplate on and realize the mentality of being compassionate to every living being, which is the essence of Mahayana or the Path of Bodhisattva.
 

Universal Kindness
Contemplate on and realize where to go after the great compassion. Why to love and cherish every living being.
 

Bodhicitta
Contemplate on and realize the only door to step in the elite spiritual society of Bodhisattvas and why Bodhisattvas are venerated equally by both common and enlightened beings.
 

Six perfections
Contemplate on and realize the daily life style of a Bodhisattva.
 

3. Visualization meditation:
Visualization is another main portion of Tibetan Buddhist Meditation. Clear and complete visualization of deity, implement, syllable and sphere of light is widely applied technique of esoteric Buddhism to enhance attention, devotion and trust in the deity through maintaining the focus of mind on it. This technique is also helpful in achieve mental peace and physical relaxation. This could be one of the secrets of the great adapts of esoteric Buddhist tradition, who live life free from mental and physical problems. 
 

Lord Buddha
Buddha is a person who is completely free from all faults and mental obstructions. There are many people who have become Buddha in the past, and many more will become Buddha in the future.
 

There is nothing that Buddha does not know. Because he has awakened from the sleep of ignorance and has removed all obstructions from his mind, he knows everything of the past, present, and future, directly and simultaneously. Moreover, Buddha has great compassion which is completely impartial, embracing all living beings without discrimination. He benefits all living beings without exception by emanating various forms throughout the universe, and by bestowing his blessings on their minds.
 

Eventually, through meeting an emanation of Buddha in the form of a Spiritual Guide, everyone will have the opportunity to enter the path to liberation and enlightenment. Of all the ways in which a Buddha helps living beings, the supreme way is by appearing as a Spiritual Guide. Through his or her teachings and immaculate example, an authentic Spiritual Guide leads his or her disciples along the spiritual path to liberation and great enlightenment.
 

Shakyamuni is the Buddha specially assigned to help us the beings of this era, so praying to him and reciting his mantra "OM MUNI MUNI MAHA MUNI YE SOHA" with pure motivation, strong devotion and clear visualization helps us to find an authentic and suitable Spiritual Guide.
 

Amitabha Buddha  

Buddha taught that actually this world is pure, but as a result of our own 'stained' mind, to us it appears impure and unsatisfactory. Only if we manage to completely purify our mind, even for an instant, the world will appear pure and complete as it is. So, generally it is difficult to born in Pure land, coz it requires complete purification of the mental stains.
 

But, Buddha Amitabha's Pure land is an exception. Because of the special oath that he took and the power of his special prayers, just recitation of his mantra "OM AMI DEWA HRI" with strong devotion in him will result to born there. Once in the Buddha Amitabha's Pure land Sukhawati (Land of happiness), one can easily gain complete enlightenment. Buddha Amitabha's practice is specially effective and appropriate for a person seeking to go to the Sukhawati and become enlightened.
 

Avalokiteshvara
Lord Avalokitesvara is personification of great compassion of all enlightened beings. He took special oath to listen to the cries of poor and destitute for help them. To fulfill the oath he appears into every necessary and suitable form to save beings from all kinds of sufferings. By reciting the mantra of Avalokiteshvara "OM MANI PADME HUM" with pure motivation to benefit others and strong devotion in him, one can purify layers of negative karma. Daily recitation of one thousand times result into blessings and protection for seven generations from falling in painful situation.
 

Other benefits of reciting the Avalokiteshvara mantra are; easily find place conducive for spiritual practice, always be in good circumstances, meet many virtuous friends, obtain a complete human body suitable to study and practice Dharma, always remain on the path of virtue, always lead morally correct life, always come across many kind and harmonious people, earn plenty of wealth and means of living, get protected and served by others, never face the danger of theft and robbery, get protected by powerful deities and wishes are fulfilled. Meditation of Avalokiteshvara is specially effective and appropriate for a person willing to be compassionate and kind to other beings.
 

Manjushri
Lord Manjushri represents the wisdom of all enlightened beings. Lord Manjushri has several forms: White, Orange and Blue etc. Wearing the crown engraved with five Buddha, symbolizing possessing five supreme wisdom. By doing the practice of Lord Manjushri, one receives infinite blessings and accumulates inconceivably huge merits. Chanting his mantra "OM AH RA PA DZA NA DHI" with pure motivation and sincerity helps become wise, severe the ignorance, gain deep insight in the Dharma and worldly subjects. Meditation of Manjushri is specially effective and appropriate for a person, who wishes to sharpen the intellect and be wise
 

Tara
Tara is manifestation of action aspect of enlightened beings, so she is most appropriate one to depend on for accomplish any virtuous mission. There are many inner obstacles of spiritual development, and the inner obstacles can cause to manifest external obstacles. To be successful in daily life and practice of spiritual path, we need to rely on a specialized enlightened being like Tara.
 

By doing practice of Tara and reciting her mantra "OM TARE TUTARE TURE SOHA" every day with pure motivation and strong devotion; one collects unimaginably great amount of merit, never falls in any painful circumstances, quickly attains the Enlightenment, receives blessings from enumerable Buddhas, gets the wishes related to health, wealth, business, job, having a child, etc fulfilled, and get protected from all kinds of danger. Meditation of Tara is specially effective and appropriate for a person, who got great mission of virtue to accomplish.
 

Medicine Buddha
Medicine Buddha represents the healing power of enlightened beings. He is known as King of Medicine. Daily recitation of his mantra "TAYATHA OM BEKHAZE BEKHAZE MAHA BEKHAZE BEKHAZE RAJA SAMUGATE SOHA" with pure motivation and strong devotion protects from health problems, falling in lower realms, worldly dangers and untimely death.
 

The eight brothers of the Medicine Buddha group are not only very powerful in healing disease, but also to purify negativities of both alive and dead. Meditation of Medicine Buddha is specially effective and appropriate for patients, doctors, therapists and the healers.

Vajrasattva 

Vajrasattva is great deity of purification employed equally in all levels of Tantric Buddhism. By doing practice of Vajrasattva and reciting "OM VAJRA SATTAV HUM" with pure motive and strong devotion, one can remove layers of impurities and clean the mind stream, which will ultimately lead to freedom from cycles of action, which cause the endless suffering and unhappiness. Meditation of Vajrasattva is especially effective in removing impurities and afflictions, so is the most suitable practice for one who seeks to purify the mind.
 

Vajravidaran

Vajravidaran is famous deity of cleaning body and mind in the esoteric Buddhism. It is very powerful in cleaning body, speech and mind from all kinds of possible spiritual and material contaminants. For millenniums, great Tibetan yogis lived long, healthy and prosperous life by relying on the practice of Vajravidaran and recitation of his mantra "NAMO CHANDRA VAJRA KRODHAYA HULU HULU TISHTA TISHTA BENDA BENDA HANA HANA AMRITE HUM PHAT". Through the infinite power of Vajravidaran one can benefit self and others by cleaning body, speech and mind. Meditation of Vajravidaran is specially effective and appropriate for persons, who need to clean their body, mind or spirit from spiritual and physical contaminants. It is also helpful for the patients and healers in order to boost their physical and spiritual energy.