You are welcome to donate both adults and children books here. Children books will always free, to be able to keep organization running, they need donations to keep up free books for children, adults books are selling on this link, I donated adults books today, and doing next time :). https://www.amazon.com/s?me=A25PN9C66LIVCU&marketplaceID=ATVPDKIKX0DER
Probably not. Most of the books are for children. Some people donate what they no longer need but it may not make the shelves if it's not kid based.
Thanks! Your answer is awaiting moderation.