1. Shhodashopachara (16 Step Pooja)

On the auspicious occasion of Ganesha Chaturthi, devotees also perform Eka Vinshati (21 Patra Pooja), Ganesha Anga Puja and Shodashopachara.

Shodashopachara is 16-fold praying ritual. Here are the various steps in it -

1. Aavaahana
Aavaahana means 'to invite'. Lord Ganesha is invoked when we give Him aavaahana.

2. Pratishthapan
In pratishthapan, Lord Ganesha is installed into the idol by reciting appropriate vedic mantras.

3. Aasana Samarpana
Aasana means offering our guest the seat. This is called as Aasana Samarpana.

3. Paadya
Paadya means washing the feet of guest who is Lord Ganesha here.

4. Arghya Samarpan
Arghya means offering scented water to Lord Ganesha.

5. Achamana (आचमन)
In this step, the ritual performer takes three gulps of water to purify and smoothen the speech faculty.

6. Madhuparka
In this step the idol is offered honey for sweet (auspicious) beginning.

7. Snaana
In this step, the idol is bathed the idol with milk, curd or ghee.
पञ्चामृत स्नानम्, पयः स्नानम्, दधि स्नानम्, धृत स्नानम्, मधु स्नानम्, शर्करा स्नानम्, सुवासित स्नानम्, शुध्दोदक स्नानम्

8. Vastra Samapana
In this step, the deity is offered vastra (clothing). The clothes are offered in the form of moli (sacred red thread) and upaveeta (sacred while thread, usually offered in woven bundle).

9. Yagyopavit Samarpan
In this step, Ganesha is offered yagnopavit (janeyau), a sacred thread.

10. Gandha
The deity is offered fragrance (eetra) or scent.

11. Pushpa
Deity is offered various flowers. Garland of flowers can be also offered.

12. Dhoopa
Dhoop is volatile substance burnt to obtain pious smoke. It is made up of ghee, herbs; etc and is said to create a purifying effect.

14. Deepa
Offering light to Ganesha in form of a lamp of ghee.

15. Naivedya
Diety is offered different varieties of dishes. The offering of food made to God is called naivedya. After the offering, the food is accepted as 'prasada'. Thus prasada is food tasted and blessed by God for devotees. 

16. Taamblooa
In this step, Ganesha is offered paan leaf with betelnut for chewing.

Deity is offered unbroken rice, Shamipatra, durva grass, Sindhoor, Sandalwood during Pooja.

The Shodashopachara Puja concludes with the offering of coconut (नारिकेल अर्पण) and coins (दक्षिणा समर्पण).

After the conclusion of Shodashopachara Puja, the deity is glorified by singing Neeranajan (नीरानजन/आरती), the Ganesha Aarti. The aarti involves singing and showing of camphor flamed lamp to appraise Ganesha.

Following this Ganesha is further remembered and praised by reciting 108 names and Mantras of Lord Ganesha (mantrapushpa). After this pradakshina is performed by turning around oneself to imply that Ganesha is omnipresent.