The Lakshmi-Ganesh pujan done by some on Dhanteras and almost every Hindu family on Diwali has certain rules too, but they are all simple to follow. Start the day by cleaning the puja area and dress in new, bright clothes to feel the festive spirit. Then, decorate the home temple with flowers, marigolds, roses, jasmine, and more, and spread a clean, red cloth over the home temple over which the murtis will be kept.After that light an incense stick and spread the smoke all around to purify the surroundings. Once done, light a diya with mustard oil or pure ghee, and offer the Gods and Goddesses fruits, flowers, and coins. Then, begin the puja by addressing Lord Ganesha first and ask him to remove any obstacles that might come your way (in life and during the puja). Chant the Ganesha mantra, ‘Om Gan Ganapataye Namah’, and then move to Maa Lakshmi. Apply tilak on the murti, offer her flowers and bhog, and then recite the Lakshmi Ashtakam, or a mantra dedicated to her.
Source Homevior.in