Are you beginning research on a topic new or unfamiliar to you? If so, an excellent way to begin is to consult an encyclopedia, the ideal starting place if you are a non-specialist on your topic. They will typically provide: an overview and background information on a topic, the established knowledge on a topic, the most important facts about a topic, the key figures, places, or events related to your topic, a list of recommended readings on a topic.
Photo by Ricky Kharawala CC 0
Try searching: "your topic keyword" AND encyclop*
You may also try searching dictionary, handbook, or guide.