Herblore: If you just want the level for the quest, just make some spicy stews with the right spices so you can boost your herblore level. Crafting: Spinning flax to bowstrings is pretty quick and easy. Farming: Either buy ranarr seeds and plant to gain a profit, or just buy some tree seeds/fruit tree seeds. Hunting: Do birds until level 15 then catch Ruby Butterflies. Those are good experience. After that, I personally trained using Deadfall (23) and catching Ruby Butterflies at the same time.