Calabar wrote:
disenchant as a gathering skill, you can gain your first few points, perhaps up to 30, by disenchanting items.
Disenchanting works like anything else you can skill up; you just can't see the colours. It starts out always giving a skillup (orange.) At about level 20-30ish you are very likely to gain a skillup (yellow.) At about level 35-45ish you are unlikely to gain a skillup (green.) And around level 50-60 you won't gain anymore skillups (grey.)
I'm not sure of the exact numbers, but I've personally disenchanted items up until level 50 Enchanting.