In Hinduism, Lord Ganesha holds a highly significant place. Lord Ganesha is regarded as the first deity to be worshipped, therefore before any kind of Puja or auspicious ceremony, Lord Shri Ganesha is invoked and worshipped first. Lord Ganesha is also known by names such as Ganapati, Gajanana, Lambodara, and Ekadanta. By the grace of Lord Ganapati, a person is able to easily overcome obstacles arising in both material and spiritual life. To receive His special blessings, Ganapati Homa can be performed daily, weekly, or on every Chaturthi, according to one's capacity.

While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your entire Chetana, i.e., ,consciousness to Prajapati through the fire.
ॐ प्रजापतये स्वाहा।
Om Prajapataye Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your inspired perspective to Indra through the fire.
ॐ इन्द्राय स्वाहा।
Om Indraya Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your logical and well-organized thinking to Agni Deva through the fire.
ॐ अग्नये स्वाहा।
Om Agnaye Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your emotions and intuition to Soma Deva through the fire.
ॐ सोमाय स्वाहा।
Om Somaya Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your physical, mental, and spiritual being to Prajapati through the fire.
ॐ भूर्भुवस्सुवःस्वाहा।
Om Bhurbhuvahsuvah Svaha।
While chanting the following Mantra, offer Ghee into the fire eight times and visualize that you are offering your ability to plan and overcome obstacles to Lord Ganesha through the fire.
ॐ गं गणपतये नमः स्वाहा।
Om Gam Ganapataye Namah Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your ability to remain firm and handle difficulties to Varuna Deva through the fire.
ॐ वं वरुणाय नमः स्वाहा।
Om Vam Varunaya Namah Svaha।
While chanting the following Mantra, visualize that Lord Ganapati has entered the sacred fire of the Havana and is accepting your offerings.
अत्र आगच्छ। आवाहितो भव।
Atra Agachchha। Avahito Bhava।
While chanting the following Mantra, offer ground sandalwood into the fire.
ॐ लं पृथिव्यात्मने नमः।
Om Lam Prithivyatmane Namah।
While chanting the following Mantra, offer flowers or powdered dried flowers into the Havana.
ॐ हं आकाशात्मने नमः।
Om Ham Akashatmane Namah।
While chanting the following Mantra, light an incense stick and place it near the Havana Kunda.
ॐ यं वाय्वात्मने नमः।
Om Yam Vayvatmane Nnamah।
While chanting the following Mantra, show the Dipa to the Havana Kunda.
ॐ रं अग्न्यात्मने नमः।
Om Ram Agnyatmane Namah।
While chanting the following Mantra, offer a piece of fruit, raisins, or unconsumed, i.e., pure food into the Havana.
ॐ वं जलात्मने नमः।
Om Vam Jalatmane Namah
While chanting any one of the following three Mantras, offer Ghee into the sacrificial fire and visualize that Lord Ganapati is accepting it.
ॐ गं गणपतये नमः स्वाहा।
Om Gam Ganapataye Namah Svaha।
ॐ श्रीं ह्रीं क्लीं ग्लौं गं गणपतये वरवरद सर्वजनं मे वशमानय स्वाहा।
Om Shrim Hrim Klim Glaum Gam Ganapataye
Varavarada Sarvajanam Me Vashamanaya Svaha।
ॐ गणांना त्वा गणपतिं हवामहे कविं कवीनामुपमश्रवस्तमम्
ज्येष्ठराजं ब्रह्मणां ब्रह्मणस्पत आ नः शृण्वत्रूतिभिः सीद सादनम्॥ स्वाहा।
Om Gananna Tva Ganapatim Havamahe Kavim Kavinamupamashravastamam
Jyeshtharajam Brahmanam Brahmanaspata A Nah Shrinvatrutibhih Sida Sadanam॥ Svaha।
You may repeat this process as many times as you wish. If you know any other favorite Mantra of Lord Ganesha, you may use that as well.
Don't rush and visualize that the deity is present in the fire and is accepting your offerings and Mantras. Feel His grace and energy flowing towards you from the fire.
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your physical experience to Agni Deva.
ॐ भूः अग्नये स्वाहा।
Om Bhuh Agnaye Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your mental experience to Vayu Deva.
ॐ भुवः वायवे स्वाहा।
Om Bhuvah Vayave Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that you are offering your spiritual experience to Surya Deva.
ॐ सुवः सूर्याय स्वाहा।
Om Suvah Suryaya Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that all physical, mental, and spiritual creation within you is being offered to Prajapati.
ॐ भूर्भुवस्सुवःस्वाहा।
Om Bhurbhuvassuvah Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that your stable physical, mental, and spiritual awareness is being offered to Lord Vishnu.
ॐ विष्णवे स्वाहा।
Om Vishnave Svaha।
While chanting the following Mantra, offer one drop of Ghee into the fire and visualize that whatever is being dissolved within you is being offered to Lord Rudra.
ॐ रुद्राय स्वाहा।
Om Rudraya Svaha।
Take 6 Kishmish, i.e., raisins, 6 fruits, or 6 pieces of fruit and, while chanting the following Mantra, offer them to the attendants of the deity who do not accept offerings through fire but consume them in the form of fragrance. After the Puja, these may be placed in bushes or given to animals and birds.
ॐ पार्ष्देभ्यो नमः।
Om Parshdebhyo Namah।
While chanting the following Mantra, offer a large coconut piece, a large piece of wood, or a larger quantity of Ghee into the Havana and visualize that you are offering the awareness of your existence to Lord Shri Ganesha.
ॐ गं गणपतये नमः स्वाहा।
Om Gam Ganapataye Namah Svaha।
While chanting the following Mantra, offer Ghee into the Havana and visualize that Sata Jivha, i.e., the seven-tongued fire is pleased.
ॐ अग्नवे सप्तवते स्वाहा।
Om Agnave Saptavate Svaha।
Meditate as per your capacity using the following Mantra or any other Mantra.
ॐ गं गणपतये नमः।
Om Gam Ganapataye Namah।
Finally, while chanting the following Mantra, visualize that peace is attained by you and all beings.
ॐ शान्तिः शान्तिः शान्तिः।
Om Shantih Shantih Shantih।