For introductions on broad subjects I always go to textbooks, the kind used in Universities in introductory courses. On philosophy a good one used in many univ

For introductions on broad subjects I always go to textbooks, the kind used in Universities in introductory courses. On philosophy a good one used in many universities is "The Great Conversation" by Normam Melchert. Bonus tip: try to find it used online. It will be a lot cheaper.