Guru or Brihaspati Puja is dedicated to planet Jupiter. Grah Shanti Guru Pooja (Worship of Jupiter) is recommended to those, having malefic guru or wrongly placed Jupiter as per the horoscope. Here is list comprising a couple of things associated with Guru / Brihaspati.

Direction :	North - East
Ruling Day :	Thursday
Color :	Yellow
Associated No. :	5 (Five)
Metal :	Gold
Gemstone :	Yellow Sapphire (Pukharaj)
Grain :	Kadalai
Flower :	White Mullai
Food :	Rice mixed with Bengal Gram Daal
Mula Mantra :	Aum Brim Brishaspataye Namah
Dhyan Mantra :	Devanamch Rsinamch Gurum Kanchan Sannibham, Buddhi Bhutam Trilokesham Tam Namami Brihaspatim
Guru Gayatri Mantra:	Aum Guru Devaya Vidmahe Parabrahmane Dheemahi Tanno Guruh Prachodayat

In Vedic astrology, the planet Jupiter is known as Guru, Brihaspati and Devagura. Jupiter is a benefice planet and considered to be the most auspicious, helpful, generous and beneficent of the planets. Guru represents sacred scripture, wisdom, benevolence and philosophy. Nature of Brihaspati is watery.

Guru Puja / Brihaspati Puja / Worship of Jupiter
Worship of Jupiter results in progeny, good education, valour, longevity of life and recovery from physical illness. Brihaspati Puja can be started from any Thursday. It is advisable to wear yellow clothes on such day. Chant the following Guru mantra facing north-east, to reduce the ill effects of the afflicted Jupiter in one's birth chart.

Aum Hreem Kleem Hoom Brihaspataye Namah
One can observe fast on Thursdays and worship Lord Vishnu. Avoid salt and banana on these days.

Position of the Jupiter
Jupiter or Brihaspati rules over the sidereal signs of Sagittarius and Pisces. Guru exalts in the sign of Cancer and falls in the sign of Capricorn. Jupiter or Brihaspati is most comfortable in the first house.

Brihaspati / Guru - Its Significance
Jupiter is a good indicator of fortune, wealth, fame, luck, devotion, spirituality, morality, meditation, children, magistrates, ministers, lawyers and leaders in government and religion. Afflictions to Guru or Brihaspati can cause frail nerves, skin problems, arthritis, heart troubles, impurity of the blood and increase of sexual urges, worrying and uneasiness of mind. Guru is the grah of luck, favor and fortune.