Firemaking; is a skill used to light fires, among other things. It is the companion skill of Woodcutting, often trained by players to complete quests or minigames that require a certain level of Firemaking. You only need a tinderbox, this box can be bought in the Durka Durka shop located at home. You can create a fire anywhere.
To begin Firemaking, go to your magic spell book and click on the Skill Teleport. Head over to where it says Woodcutting & Firemaking, and choose Firemaking. As you travel to this place, you arrive in the front yard of a church surrounded by many trees. In order to create a fire, you will need a Tinderbox which can be purchased at Durka Durka's, located at ::home. You will also need some logs, which can be obtained by cutting trees or buying them from the DS Fletching Store.
Light your Logs with your Tinderbox to create a fire.