In Diwali pujan or Laxmi pooja  mainly Lord Ganesha and Goddess Laxmi in her three forms are worshipped.It is the main event on Diwali in North and West India. It is believed that Goddess Laxmi visit everyone during Diwali and brings peace and prosperity to all.

Keep the house very clean.Lamps are lit in the evening to welcome the goddess. They are believed to light up Her path.

Lord Ganesha -is worshipped at the beginning of every auspicious act as Vighnaharta; Goddess Lakshmi - is worshipped in her three forms - Mahalakshmi (the goddess of wealth and money), Mahasaraswati (the goddess of books and learning), and Mahakali; Kuber (the treasurer of the gods) is also worshipped.

On a raised platform spread a new cloth.

Place a handful of grains in the centre and, on this, place a kalash, lota(pitcher). Fill three-fourth of the kalash with water and place a betel nut, a flower, a coin, and some rice grains in it. Place the mango leaves in the kalash.

Place a small dish on the kalash and fill it with rice grains. Draw a lotus with turmeric powder haldi over the rice grains and place the idol of goddess Lakshmi over it, along with coins.

In front of the kalash on the right (South-West direction), place the idol of Ganesha. Also place ink and books related to your business or occupation on the platform.

Light a lamp and the Agarbatti (incense sticks) begin the puja by offering haldi, kumkum , and flowers to the platform on which the kalash is placed.

Sprinkle this water on all utensils to purify them.

Make  a Panchamrit  with 5 ingredients ie milk, curd, ghee(clarified butter), sugar & Honey.

Finally, perform the aarti for goddess Laxmi.At the end distribute the prasad to all the members.Now light the lamps and candles all around the house.

1) King Shri.Ram-
Diwali is the auspicious day when King Rama's victory over demon king Ravan of Lanka,was celebrated in Ayodhya,by the royal families of Ayodhya and Mithila.

To Welcome back home the victorious and divine king Rama,his queen Sita with brother Lakshman,the cities and all boundaries of the kingdoms were lit up with colourful lamps and firewoks.

2) Harvest Festival-
Diwali is the festival,which is celebrated at the end of the cropping season.The harvest is the prosperity.The celebration was first started in India by farmers after they reaped their crops.

The farmers celebrated with joy and offered praises to the God for granting them a good crop and prosperity.

3) Narkasur-
The demon Narakasura, was a great harassment to the gods and the sages,who disturbed their penance and created havoc during the rituals.He also challenged the king of Suraloka and a relative of Satyabhama,Lord Krishna's wife.

The annoyed Indra and other gods approached Lord Krishna and pleaded with him to protect them from the demon 'Narakasura'.Narakasura was given a curse that he would be killed by a woman.

Knowing this,Satyabhama requested Krishna to grant her the opportunity,to fight with the demon.Accordingly Satyabhama entered the battle field and killed the demon, Narakasura,which was a victory of good over evil.

Bhudevi,the mother of Narakasur,announced that his death should be an occasion to celebrate and rejoice.This festival is known as Diwali.

4) Mata Lakshmi-
Diwali is the day,when Mata Lakshmi emerged from the ocean of milk called the Ksheer Sagar and brought wealth and prosperity for mankind.

So,on this day,Lakshmi Pooja is performed to honour her. Many people believe that Lakshmi,the Goddess of wealth and good fortune,visit the homes on this day after the evening lights are lit.So the worship of Lakshmi is performed in the evening.