General Info

How?
The Devs talked about how crafting won't be "A+B-> C"; they wish to have a different system than most MMOs. Crafting will depend upon the skills of your character and the manner in which you perform the crafting. A person who has all the right materials to make an epic sword can still get a piece of junk if he doesn't have enough skill and doesn't perform the actions of the work well.

More than one craft?
People will have to dedicate their time to one type of crafting in order to excel. Hybrids or jacks-of-all-trades can be viable, but they'll never have the skill that a person can have who has specialized in one particular craft. In this game, it is all about perfection.

Combining?
"Yes, there will be some items that will be made from the assembly of other items; like weapons, armors, etc."

-- Martin Brosseau