Hmm. I'm all for level of detail and just read a bit into the Fate Core book.
I really like what I'm seeing so far and the Aspect system sounds very interesting indeed -- for Marissa, I figure something like 'Apprentice of Mebbeth, a
herbalist witch wise woman with a mysterious agenda' as High Concept and 'Struggles to temper her strong curiosity, intrigued by knowledge and power' as Trouble would sound appropriate to put forward when we make character sheets?
Reading onwards, the third Aspect would be something Marissa did on her own, her very first adventure-y thing to do, then Shrroth and I essentially switch these adventures and add our own character into the others' as a support role to figure out the fourth. Then the same switch again with a potential third player character, or some alternate means for the fifth aspect.
I haven't looked too closely at skills and stunts yet, but they look easy enough to grasp at a glance.