Three layers of newspaper folded into the middle and scrunched into a ball is a good start. Add wood, then charcoal and finally coke once the fire is producing enough heat to burn the latter. Add air from your blower only when the fire is capable of sustaining itself naturally, otherwise you'll probably exhaust whatever fuel is burning at the centre of the fire before the surrounding material gets chance to burn. I've seen smiths light the fire with a gas poker, which is novel and quite fast, but when starting out I'd advocate learning the hard way. It takes a few attempts, as it did with me when I first used coke, but you will get the hang of it soon enough. My advice is to spend an hour or so chopping small (6-8") kindling of varying thicknesses so that you have enough fuel to start with and don't get caught short.