Hi, I Am I Am Ownage (LOL), and I will be teaching you how to make money. In the future if you're lucky I will add pictures.
Option 1 : To make money, go to ::skiller. Then follow my crafting guide (Coming out soon, check my guide to all skills). This is the best money making for skillers and low levels.
Option 2 : The longest option. Go to ::train and kill Rock Crabs. They will drop "Caskets". You may be able to sell this for 10 million to 50 million, although if you open it, you may get a Party Hat (Like 1% chance if you're still able) which is worth Maximum Cash (2147 million). You may also get 3rd age, which is worth a bit (You can sell for around 6 million to shops). There are other items, like Gilded or Pirate Hats which some people will buy for quite a bit, even though they're not that rare.
Option 3 : Kill the Kalphite Queen for Dragon armour. She also drops Caskets and 5 million gp. You sell the Dragon items (Dragon Full Helm and Dragon Platebody excepted) to the "Shop Keeper" at ::mall or ::shops. You can sell the Dragon Full Helm (DFH) for around 50 million and the Dragon Platebody (DPlate) for around 100 million to the right players. You can get here by going ::home, talking to the "Gnome Pilot" and teleporting via him. WARNING : YOU MAY DIE!
Option 4 : Kill General Graardor for Armadyl (Are they nulled?), GodSwords (All of them can be dropped, AGS being the rarest) and Bandos. You can sell these items to players for lots of money. You get here by going ::home, talking to the "Gnome Pilot" and teleporting to GodWars. Then kill 5 Saradomin Wizards and go down the stairs for General Graardor. WARNING : YOU MAY DIE!
There are many other ways (Which I will be adding as I go along) that you can make money. If you know any ways to make a decent amount, post here and I might add to the Money Making Guide.
~~I Am Ownage