Well, the basic principle is to buy low, and sell high. In other words, find an item that you can buy for one price, and sell again later - perhaps within minutes or hours, or perhaps after a few months - at a higher price. Check the price curves for different items - those are available on the RuneScape website, with historical prices for the last 6 months.
You can merch items.
Get some resource through mining, woodcutting, or fishing, then sell it at the Grand Exchange.
you can buy the whole set from the grand exchange in varrock in f2p
The bestest ways are to kill hill giants or to mine coal ( if you have the mining level ) then sell them at the Grand Exchange.
A great merching cc in runescape is Gp Merch2009, another old reliable cc's is Uptheprice. A great Merching Clan to Join is "Jump GP". If you join right now, You can triple what you had, its also a scam-free F2P merch CC. Our site is "jumpgp.tk" just Google it. Its a VERY popular merch clan. ATM "Hero Merch" is at the top of the net wealth f2p merch cc's, been alive for 2+ years and have a 87% success rate and 78% increase in wealth amount depending on how much you invest
buy addy armour set at minimum price at grand exchange and then sell high (go to worlds with trade f2p and wtih a lot of people).
There are several ways to do this:Mining runite.Fish lobsters and sell them to the Grand Exchange.Collect cowhides and sell them to the Grand Exchange for 110 GP.Buy a tinderbox from the General Store for 1 GP and then sell it in the Grand Exchange for 10 GP.
well now that they have the grand exchange id havta say the GE GRAND EXCHANGE
Try selling them on the Grand Exchange in Varrock.
If you are a F2P (Free To Play) Player, you only get 2 boxes. But if you are a paying member, you get all 6 of them. So unless you are a member, you do not get any more than two G.E. boxes.
Try mining. Or get some other resource. Then sell it at the Grand Exchange. If this is too slow for you, and you were expecting some "magical shortcut", well, there is none.
You can craft air runes just south of the Grand Exchange in Varrock