Ranged is another very easy skill to get 99 in. However, ranged is not trained like most of the other combat skills. You do not actually engage in combat while training it. In fact, using bows will not get you any ranged experience at all. Instead, you just have to click a target at the Train teleport.
There's absolutely no items that you will need to train ranged. Just head to the "Train" teleport in your emotes tab and head to the target south of the Barbarian women.
Once you get to the target, all you have to do is spam-click it until you get 99 ranged. You get ranged experience every few seconds by clicking on it. If you don't want to be bored by sitting there and clicking a lot, I'd recommend installing an auto-clicker to do it for you. Be careful when installing these, as some may contain harmful content. I am not responsible for anything that happens to your computer because you were too careless to check for viruses and whatnot. Do this at your own risk.