Smithing - Buy iron ores and rings of forging, smelt the iron ores into bars. Then make iron knives, if you sell the knives for 45 each and buy the rings of forging for 3K each, you'll break even. Cooking - The fastest way would be to buy raw lobsters and cook them. Crafting - The fastest way here would be to buy hardleathers and making hardleather bodies. Firemaking - The fast way would be to buy yews and burn them, but you can also buy willow logs from the lumbridge general shop and burning them. Magic - Use curse if you want the cheap way. If you manage to get fletching to 70 and this skill to 55, then just high alch. Runecrafting: Use runners, the World 16 runners work well. That's all I know. I'm not exactly sure about the smithing tip, I'm F2P. I simply saw it in another thread.