Quiet by Susan Cain was a solid book subtitled The Power of Introverts in a World That Can't Stop Talking.
Cain covers how extroverts are held up as the way someone supposed to be, but that gives short shrift to what introverts, as a sizable portion of the population, contribute and the skills an introvert posses can be ones that an extrovert might likely not have, ones around listening, not being rattled, and being able to focus.
Its noted in the book how introverts can speak publicly, and will typically be most successful doing so on things that are important to them, and that we shouldn't build our workplaces and homes simply around extroverts. For an extroverted parent of an introverted child, care should be taken to both understand that the child different than themselves and to help in planning for interactions and big social encounters. The book is a bit slow at times, but has interesting ideas to it.