What are the 3 main ways to start and sustain a fire?

To start and sustain a fire, you can use the following three main methods:

1. Tinder and Kindling: Begin with dry tinder (like leaves or small twigs) to ignite the fire, followed by kindling (slightly larger sticks) to build it up.
2. Fuel Wood: Once the fire is established, gradually add larger pieces of wood to sustain it and maintain a steady flame.
3. Proper Airflow: Ensure adequate airflow by arranging the wood to allow oxygen to reach the flames, which is essential for combustion and prolonging the fire.