Special Puja Like : Bhoomi poojan, Greh pravesh, Vrat pooja, Opening a new business, Laxmi pooja Durga pooja etc.
Puja rituals are also held by Buddhists and Jains. In Hindu practice, puja is done on a variety of occasions, frequency and settings. It may include a daily puja done in the home, or occasional temple ceremonies and annual festivals. In other cases, puja is held to mark a few lifetime events such as birth of a baby or a wedding, or to begin a new venture
Puja, the loving offering of light, flowers, and water or food to the divine, is the essential ritual of Hinduism. For the worshipper, the divine is visible in the image, and the divinity sees the worshipper. The interaction between human and deity, between human and guru, is called darshan, seeing.
The art of performing a Puja or a Ritual at Hindu households has always remained a matter of concern unless you have a "Family Pandit".