The history that one is taught in school is a fairy tale of no more or less historical basis than Game of Thrones or Lord of the Rings. Of course, the history that one learns outside of school is not much different. Each and every historical moment is the sum total of millions or billions of people contributing to one little snapshot as well as the sum total of every event that took place beforehand. The best approach, then to any historical event is to find as much information as is available from the time of the actual event, and try to make sense of the accounts, reconciling inconsistencies and committing faith only to that which is both conceptually valid and has sufficient extant evidence.
Today's resource, concerning the Irish Holocaust, is a good starting place for learning how to approach history from multiple angles, keeping in mind the conceptual nature of any narrative presented by historians or teachers.