Best tools to find rare and used books in 2025

💵 Affordable books 📖 Book donation support 📚 Book exploration community 📚 Book exploration initiatives 📖 Book gifting 📚 Book recommendations sharing 📖 Book sustainability efforts 📚 Book tracking tools 📝 Create reading lists online 📚 Reading enjoyment community 📖 Reading goals support 📖 Reading progress community 📖 Reading support initiatives 📦 Sell back used books 🌍 Support literacy initiatives