A: to the bed question:
After the first monster killing quest you will gain access to the cave in your home area. There is already a bed standing in which you can sleep.
Q: Will unlocking another infuser slot in the crafting screen be permanent?
Q: What components will add what attributes in the crafting process? What I found out yet:
As material (main component):
(seems to differ) ?
Iron Ore: 2 Defense
Soft Wood: 5% chance to deal criticals
Thin Shell: ?
Cotton Fiber: ?
Ragged Pelt: ?
Brittle Femur: 2 Meely