Yoga

In Hindu philosophy, Yoga is a means to attaining the Supreme State of mind. It is a skill, an art and a separate branch of knowledge. There are countless Yogas. A few spiritually advanced systems of Yoga are - Bhakti Yoga
Considered by many to be the highest and the best form of Yoga, especially in today's times, this is the path of Devotion. Bhakti yoga teaches us how to cultivate a devotional relationship with God. Some aids used include chanting the Lord's names, singing His praise and so on.
Jnana Yoga
Jnana yoga is an approach to spiritual enlightenment through discrimination and reason. This path makes strong use of the powers of the mind. It is the path of the philosopher who wants to go beyond the visible universe. Extremely difficult for the ordinary man to practise.
Karma Yoga
Karma yoga teaches us how to discharge our worldly duries in a spirit of detachment and yet harness the natural desire to be productive. This Yoga lays stress on doing one's duty ('karma') without expectation of the fruit. A simple example is a householder who provides for his children without any expectation in return (not even the child's affection, which clearly requires an extremely high level of perfection of the mind to perform such sacrificial yoga). Most of us expect something or the other in return for the duties we dischrage, thereby tainting the action with karma and binding us to this material universe.