It would be nice to have a Sticky with a FAQ for enchanting, smithing, and alchemy.
my current problem is that I don't know why I can't disenchant some items. I have like 10 magic items in my inventory, and the one that I can't disenchant is the one I really want to get!
there are so many disorganized threads about enchanting, and UESP does not have a FAQ for enchanting. I get the basics, now I have specific question.
I'm assuming the item you can't disenchant is a unique item or a staff. Neither of those can be disenchanted.
Also (just in case you were confused) you can't disenchant a weapon/armour piece if you already know that enchantment. If you disenchant an axe that does 20 stamina damage, then you learn the "stamina damage" enchantment, not the "20 stamina damage" one. You can then enchant any applicable armour piece with +X stamina damage, and your Enchanting skill and the size of the soul gem will determine the level of the enchantment - i.e. how much stamina damage it will do.