Beginning Clue Scrolls - You can obtain them from nearly all low-level creatures within RuneScape. The easiest creatures to eliminate are Man and Woman. You can also kill Goblins and Cows by going to Lumbridge. It's clear that these enemies aren't too difficult to defeat, and you can get scrolls without any effort. Drop rates for these enemies are approximately 1percent. You can therefore expect one scroll for every 100 kills.
Simple Clue Scrolls - The easiest method to get the scrolls is to pickpocket H.A.M. Members. The drop rate of scrolls should be around two percent, which means that for every 50 pickpockets, you'll receive one scroll. This shows you that Easy Clue Scrolls might be much easier to obtain than the beginner ones. If you steal from H.A.M. Members, you may get exiled and taken out of their secluded areas, so make sure to wear an H.A.M. set (which you can buy from picking pockets or purchase at Grand Exchange).
This will lower the chance of getting forced out of your farming place while pickingpocketing. If you do not have a high enough Thieving level or you don't like this, then you can buy the Imbued Ring of Wealth, head to the Edgeville Dungeon, and kill Thugs. They're monsters of level 10 which means that killing them won't be an issue even for players who are new to the game. With the ring, you have a 1/64 chance of getting an item drop following each killing.
Medium Clue Scrolls - Although they're called medium, they're more difficult to get than easy and beginner scrolls. The best way to get Medium Clues is to fight with Ice Warriors. They can be found in large numbers deep into the north-west Wilderness. They are easy to kill by Dwarf Multicannon and ranged attacks. Be aware that going out into the Wilderness can be dangerous because of Player against. Combat between players, so rs07 fire cape service don't transport anything of value.