As with the real world, the higher your gathering skill is, the greater the profits to be had. The following sections will help you get started with each gathering skill. As prices change frequently, specific gold amounts are not given. If you want to see how much money you could make selling different items, check that item's value on the Grand Exchange tracker, which is available on www.RuneScape.com under the Community tab.
Two of the most useful gathering skills for new players are woodcutting, and fishing. The fish you catch can be cooked on a fire (made using wood from the woodcutting skill) to produce food for your character to eat. Training fishing takes a lot of time, but it's well worth doing.