You need to establish a good bed of coals.
You need to get the smoker up to cooking temp.
You can do that in the smoke box or a chimney.
Push the coals up against the main box and add new fuel against it. The fire burns towards the air intake.
This is banking the coals. Add new fuel as needed to maintain the temps.
Every smoker is different. I haven't cooked on yours. Practice is the key.
Hope this helps,