No magic experience game glitch: There is a way to complete tutorial island with no magic experience. When you get to the magic part of tutorial, drop all the runes the wizard gives you. Talk to him again when the runes are dropped and you will be able to continue with tutorial without magic experience.

Raising Cooking game glitch: In the tutorial, after burning the meat and getting another, keep dropping and talking repeatedly until you have enough Cooking.

Raising Ranging game glitch: In the northwest part of Varrock Castle is a door that looks strange. Stand in the doorway and close the door. Wait for a guard or warrior and attack it with your bow or crossbow. The guard will not be able to attack you because you are in the door.