The word Yoga is derived from the word "Yoke" and some say it means "union" as the two oxen are tied together with a yoke.  But a yoke is used with just one animal, too.  Therefore it is much more likely that the word means control, or discipline. 

Yoga is often used as a means of connecting to God. The ancient Vedas taught that there are seven basic schools of yoga (one of which is never names).  But today there are many schools or sampradajas with different forms of yoga. All teachings guide an embodied spirit in a (non)-personal relationship to God.

The native yoga-paths are a part of the Vedic culture we refer to today as Hinduism,. because the Vedic teachings have remained in the Indian sub-continent unchanged longer than they have in other locations. It seems as if these philosophies were known all over the world.

KARMA YOGA (Bhikshu)

Karma Yoga achieves union with God through right action.. Karma Yoga can also be summed up in a statement by Sri Bhagavan Krishna in the Bhagavad Gita: "Worshipping Him with proper actions, a man attains realization". One key to Karma Yoga is the performance of right action and service for its own sake, without consideration of the immediiate or apparent results.

BHAKTI YOGA (div. Authors)

The Yoga of love and devotion. The Way of Transcendent Love which sees the whole universe, animate and inanimate, as being pervaded by divinity. Also very much involved with service (refering Karma Yoga), and way of the heart.

HATHA YOGA

It is a yoga concerned with physical and energetical purification and training. Its goal is to bring the physical body into a perfect state of health so the soul has a fitting vehicle of expression to work through. It embraces many practices, including physical postures and breathing excercises (pranayama) which alos act upon the physical nervous system and etheric body which is considered a corollary aspect of the physical body and brings the vital energies of the physical and etheric bodies under conscious control.

 

KRIYA YOGA:

The yoga of cleansing - both inner and outer

• Aa simple, yet powerful method of spiritual ascent, whereby one's natural balance and integration can be easily achieved.

• Surat Shabd Yoga: Sant Ajaib Singh ()
  Path of the Masters, Surat Shabd Yoga, Master Sant Ajaib Singh
• Soami Divyanand Spiritual Foundation ()
  Sant Mat branch, Inner Light and Sound Meditation
• Science of Spirituality ()
  Science of Spirituality is a nonprofit, nonsectarian, international spiritual organization under the direction of Sant Rajinder Singh
• Quan Yin Method (Master Ching Hai)
• The Quan Yin Method  
• Eckankar
  Religion of the Light and Sound of God

• An ancient universal science, perfected over thousands of years. Anandi Ma is an advanced disciple of Dhyanyogi and one of few people who can perform Skaktipat. Through Shaktipat the disciple can excel quickly in their spiritual journey towards Self Realization - Enlightenment.

• Esoteric sexuality, sacred sex and sexual enhancement.