Kami12, if they are using alchemy and speech, it's quite simple:
Make a bunch of your uber-potions (you don't unlearn what you already know, the potions are just not as uber as they used to be)...there's 100 in Alchemy.
Go to a vendor, and sell them. There's 100 in Speech.
Make a bunch of your uber-potions (you don't unlearn what you already know, the potions are just not as uber as they used to be)...there's 100 in Alchemy.
Go to a vendor, and sell them. There's 100 in Speech.
EDIT: Actually, I'm not investing in Speech as it really serves no purpose for my current PC. Alchemy and Enchanting (possibly Blocking?) are really the best candidates for Legendary.