Rank up your alt to around lvl 35 enchanting, then make some glyphs using 2 or 3 unused runes and get the boost for discovering them. That should take you to lvl 40.

Welka wrote: »

Seriously? I know discovering runes give a lot of xp but I don't think I'll take 5 levels by just discovering 3 runes :P

Saying that, my alt has discovered no rune yet, so I'll probably do as you suggest, wait for lv 35 and discover all runes to get some good XP

You get large amounts of Inspiration for learning new Runes. So, some say that it is better to wait until you are a higher level to use Runes that you have never used before. So, say you never use Stamina and Frost and Shield in a rune, then save those for later on in your Enchanting Leveling. Same with Potency Runes. And, you can get huge amounts if you use a new Potency, Aspect and Essence Rune for the first time in one Glyph.

However all the Inspiration guides I see for Enchanting use Fixed numbers for the values of Inspiration, not a percentage. So, I don't see the difference myself if the inspiration gained is a number value and not a percentage. You would just get more levels at a lower level than at a higher level. Perhaps learning a new Potency rune gives more Inspiration as the Potency runes increase in power, so it seems like a percentage. Same with Aspects for the first time, but I don't see how this would be different on an Essence Rune.