Mage Of Zamorak
To start this quest go home and run south-west. And talk to Mage of Zamorak. This is the easiest quest by far. There are no requirements but you will need:
1 water Rune 1 Fire Rune 1 Air Rune 1 Earth rune 1 Bones 1 Big bone 1 Dragon bone.
Once you have all of those items talk to him again and you are done. This quest will give you:
1 quest point And the ability to trade in sinister keys with Mage of Zamorak for 200k gp.