1, SW -> if u dont wanna lose gp -> than afk
-> if u wanna lose low amount of gp -> than course in sw
-> if u wanna have fun and great exp (like 200-300k/hr) -> thn ancient in graveyard in sw
2, alching -> like 120k alchs till 99 , idk any fast buying items without gp lose... but this should help u:
http://runescape.wikia.com/wiki/Calculators/High_alch
3, Buy sapphire necklaces for 1,001 coins, cosmic runes for 225 coins each, and a water staff, which costs 827 coins. Enchant the sapphire necklaces and sell them for 1,472 coins, pocketing the difference. This is much more effective if you start out with a bit of cash. Non-members can do the same with Sapphire amulets, making Amulets of Magic. However, this will make less profit
4, Teletabs can be made and sold for both magic experience and profit, provided you have access to a lectern. The different teletabs you can make depends on your Magic level and the type of lectern you use. Assuming all materials are purchased (including runes and soft clay), each teletab gives the following profit: Varrock Teleport (314 coins), Lumbridge Teleport (307 coins) Falador Teleport (243 coins), Camelot Teleport (95 coins), Ardougne Teleport (-11 coins), Watchtower Teleport (-111 coins), and House Teleport (435 coins). In general, it is possible to craft about 900 teletabs per hour if a butler is helping you.
5, You can use a Charge Orb spell to enchant unpowered orbs. Fire and earth orbs are not as in demand as air and water orbs and may take longer to sell. Each round trip to the air obelisk should take about 4 minutes. If you are using 27 orbs and 81 cosmic runes this will gain you 2,052 Magic experience per run, along with over 10,000 coins profit assuming you bought the runes and orbs. This method of money making is highly underutilized, most likely in part due to so many players being unaware of the ease of the process or the demand for the finished product.
6, Buy vials for 191 (as of 2009 09 17, they sell for 140 on the Grand Exchange) and cast Humidify to fill them with water. Sell the filled vials for 234 coins (as of 2009 09 17 they sell for 179 on the Grand Exchange) each. With a steam staff to reduce cost of runes, you can make 905 coins per inventory (as of 2009 09 17, Astral Runes sell for 266 each on the Grand Exchange. This means you can make 805 coins per cast.) Due to a recent update, players can no longer buy an infinite amount of vials for a set price, so buying from the Grand Exchange is the best option. A very reasonable amount of casts per hour is 408. With the aforementioned prices of 2009 09 17, a player can make 328,440 coins per hour (note that even if the prices do change, the profit per hour will probably vary from 310,000 to 350,000, so a player does not have to worry about this being incredibly inaccurate)