The books that have helped us with unschooling have been things that amused or intrigued or provided answers to questions. How-to and trivia books have been popular here. Real-life combined with humor makes for easy learning.
Given a choice between something funny and something somber, go with funny if your goal is peace and learning. Very few things need to be still and serious.
If you're going to unschool, it needs to be better than school. If that involves getting mental, emotional or physical therapy for the parents, then do it! The house doesn't work if the roof is leaking and there's no heat. Parents don't work if they're in an emotional fog and can't pay sweet attention to their kids.
Healing Presence photo by Sandra Dodd, of some ice cream in Leiden
Did you do something to make a child's life better and richer? Be grateful that you thought to do that, or know how to do that. Did your child look at you with affection? Can you tweak your life enough that those affectionate looks come even more often?
The more one's reaction to "food" (the word, the idea, the substance) is strong and emotional, the more evidence there is that the way in which that person was raised to see and deal with food should not be repeated.
Some home educating families feel that they're on trial, or at least being tested. If someone asks you something like "What about his social growth?" it's not an oral exam. You're not required to recite. You could say "We're not worried about it" and smile, until you develop particular stories about your own child. It's easier as your children get older and you're sharing what you *know* rather than what you've read or heard.