propane forges can limit the size of work, cant heat a 1' wide piece in a 6" forge
propane can scale the work more also
But just light the forge, turn on the fan if has one one, wait a couple minutes till it is up to heat put enough iron in till it works you to death. Should be able to have one piece in the forge getting hot while you are working theother. Dont try that with coal or charcole unless you like seeing sparks as you piece burns up.
With that said I use homemade charcoal and an electric blower.
Forge welded 2' of 1 1/4" cable yesterday, planning on making a cable damascus hawk for an auction