The Sugam Yag Vidhanam is a guidebook, not a replacement for a Guru. If you are performing a Yagya for a specific serious purpose (like Pitru Dosha or Mahamrityunjaya), it is highly recommended to perform it under the guidance of a qualified priest (Vedic Pandit) at least once before doing it alone.
The text breaks the ritual down into stages: Sugam Yag Vidhanam Pdf Download