First gather the things required and then start the Pooja.

Things required for the Pooja:

1 kalash

2 betel leaves

3 flowers

4 dry whole channa and jaggery for prasad

5 camphor for aarti

6 agarbatti

7 diyas

8 turmeric

9 kumkum

10 photo of santoshi Mata

11 coconut for kalash (have to continue with the same coconut till you complete Pooja)

12 a wooden stool for placing the moorthi

13 rice mixed with turmeric

14 Santoshi Mata Story Book

15 Prasad of Chana,Banana & Joggery

Santoshi Mata Pooja is usually performed on Fridays for a period of 16 Weeks.

On a Friday morning take full bath and place the photo in a clean area with a small Kalash(sacred pot of brass). Place Santhoshimatha's photo and decorate it with flowers. Keep channa (soaked in water for 6 hours in water) or puffed bengal gram along with jaggery piece and bananas as prasadam.

Light the lamp before the Goddess. Chant the mantras and narate the story to all present there.Perform aarti to Mata and distribute the  "Prasada". You can do fasting the entire day or can have food only once in a day (may be supper or dinner). You are not supposed to eat anything sour on the day of the Pooja...

Continue this for 16 or 32 weeks on Fridays, and after you finish you have to do Udyapan, i.e. you have to offer food to kids and not to give them any cash, as they may buy a sour eatable.