To light a torch / candle / lantern you just use it with a lighter. Also note that all light sources are untradable after being lit. Each light source behave differently depending on what type they are. Strong light sources can will never go out except by the player off, but a candle or a flashlight can be turned off by a little wind in the area or, even worse, ignite gas cave and thus deal with the damage and you exit at the same time. Wind will not effect light sources closed, but they will come out or break if you fall into the water.
The brightness of the screen when you are in a dark area also depends on your lamp. The brightness is 3 (max brightness) if you take multiple light sources. For example, if you took a torch and the candle in the game with runescape gold. The brightness of your screen would be 2.Gnomish firelighters can be obtained as loot hunts can be used to dye a newspaper from the color of the lighter used. These logs can then be burned with a cigarette lighter, with each giving 10 xp over a log-normal. They are stackable, and a fire starter is used for each log burned.
You can build these yourself, or find them in the homes of other players. To enlighten them, you use a log-normal with a lighter in your inventory to earn more XP than you would if you burned a newspaper way.1 fashioned iron bar is necessary for Smith this point. It's essential equipment if you want to cook Chompy / Jubbly you hunt. In addition, rabbits cooked with what heal more.
When illuminated with a marrentil, these burners add 50% each of prayer XP you earn from the use of bone with your POH altar. All burners oak marble gives the same bonus in the game with buy runescape gold, and note that candlesticks and torches will add nothing to the prayer XP than you earn. Purchased from slayer masters. You need to have this fitted in your home shield to kill Harpie bug swarms. Note that this is not a light source.