Well people say that crafting is one of the most EXPENSIVE and HARDEST skill to level up in ... but its really not ... you don't have to spend load of money on uncut gems and all that crap... all you need is to make urns... when you make a urn its gives lots of exp... for the molding the firing and attaching the rune to it.
Achieve level 50 runecrafting.
The Runecrafting Guild is part of the Wizards Tower base in Draynor Village, you will need level 50 Runecrafting to access the portal on the 2nd Floor.
You will need 20,267 Air Runes form level 1 - 50 RC, so I'd say that amount in Ess.
about 70-100 days when you have got the level for nature runes
Not that I'm aware of, besides a wizard runecrafting hat from the runecrafting minigame and a hood that goes with the runecrafting skill cape.
earth or fire cause they are very close to banks
Kill Gremlens
you have to be level 50 runecrafting to be able to enter te runecrafting guild
Some you can buy at the RC Guild when you have level 50 RC, or you can kill abyssal monsters and they drop them as random drops.
personally i hate prayer i think its too hard to level up and also runecrafting is quite slow
You can buy them at the Grand Exchange - or make your own, once you have the Runecrafting level.
Make runes. Air, Water,...