Love the Book, still having trouble applying things

[Naldiin]

First, I do like the setting as presented. Most of that I can understand pretty easily. My grasp of the mechanics, for this and Wild Talents in general, is still pretty weak though. So here are a few questions and I'd dearly love if I could get examples with answers (although just answers are still appreciated).

1) Conduits; do they get all the spirit's Abilities, Skills and Miracles, or only certain ones? How is that determined? Can they make use of HD or WD in Command or Charm while Invoking or Conjuring?

2) If you can't use a Conduit's enhanced forms of dice to Conjure or Invoke can you use those you've gained by eating an appropriate spirit?

3) If you can only have 3 Familiars at any one time how do Xotol magicians sell Charms?

More later, still haven't finished the book entirely so these may be answered and I overlooked them.