I use two propane forges, a large and a small. The small one is used for knife forging and is run from 3 bottles of propane connected together running through a regulator. The regulator has a gas proof quick relief valve. The large forge ("Puff the magic dragon") is a 4 inlined burner propane forge. I use this for damascus making. This runs continuously at 1400 Celcius and I can heat 60 cm of length to 1400 Celcius if necessary.
I do use charcoal in a specific forging and heating processes.
This shows me using charcoal to heat a sword.
I was trained using a coals/coke forge. Whilst this is a good way for a beginner to learn the impracticalities of smoke and the size of fire make it problematic for high end damascus forging. With my large propane forge I can heat a 8 kilo block of laminated steel to weld temperature. Try making a fire big enough for that size of billet in a coals/coke forge. Though it is possible, the amount of coals/coke you would need would make it extremely expensive. It is important that a beginner learns to control a fire but for modern bladesmithing the propane forge has exactly the same controllability as a coals/coke fire.