Poojas and Havans
No. Havan Desired Result
1 Ganapathi Havan Remove Obstacles
2 Sudarshan Havan Removing of obstacles - from enemies
3 Rudra Abhishekam Papa Nivritti
4 Mrityun Jaya Havan To ward off death and terminal sickness
5 Nava Graha Havan House warming - Graha Pravesh
6 Nava Graha Shanti Special purpose when the planets are badly posited in a horoscope
7 Shri Sukta Havan Money
8 Kubera Havan Money
9. Kooshmanda Havan Cleaning the self from sins - broona hatya
10 Vastu Shanti Griha Pravesh
11 Durga Havan General Prosperity
12 Chandi Havan Prosperity
13 Avahanti Havan Wealth, Vidya, and general prosperity
14 Shri Vidya Havan Studies
15 Ayushya Annually done to increase longevity

Upasana can be done of Ganapathi, Shiva, Ram, Ayappan, Subramanya, Devi and Vishnu. Various numbers are given in appropriate texts. The following table is only an indication of their approximate proportion:

Japa 100000
Havan 10000
Tarpan 1000
Marjanam 100
Feed Brahmins 10