It takes time. If you are patient enough , you can earn ALOT of money using runecrafting. So, lets start the guide!
------ Air Runes ( 1 - 20 ) -----
The first few levels are not really time consuming. It's fast and easy.
I recommend buying rune essence in bulk. Like buy 5000.
For me, i did water runes from 1-20. But, air runes are more better in moneywise.
So , the air altar is near the varrok bank, so it's fast.
------ Body Runes ( 20 - 99 ) ----
Okay , now is the time when runecrafting starts to get time consuming.
Since this is a F2P guide , body runes are the last runes that F2P players can make.
Well , if you do body runes , there won't be alot of profit if you buy the rune essence from GE. But in F2P, body runes gives the most highest xp. 210 xp for one full inventory which is 26.5 for one body rune.
---- Great Orb Project ( Runecrafting Guild --- Level 50 rc ) ----
Okay , as far as i've heard, great orb project can earn you alot of money. I have not tried it yet. Still trying to get to 50 rc but it takes so damn long.
I have no idea of how to explain the game. But you can try youtube ! (:
I know of some people who log into their accounts more than one time and use them as runners. It's risky as people can report you. If you want , you can try it
Have fun guys!
Hope this helped.
PS ; Will be doing a cooking guide soon