AND connects two unrelated words (example: crime victims AND psychological effects)
OR connects similar words for more results (serial killers OR serial murderers)
NOT eliminates results with a specific word (serial killers NOT victims)
eBooks are helpful for learning a lot about the general topic of serial killers all in one place. You don't have to read the entire book for it to be helpful! eBooks are hyperlinked and searchable, making them easy to navigate and find information quickly. You may not find an entire eBook about your serial killer, but eBooks may have individual chapters or sections about different serial killers.
Use an article database when you're ready to find shorter pieces of information about serial killers or criminological theories.