Diving straight into reading journal articles can be daunting and inefficient, especially if you are new to a topic. Background sources like encyclopedias, dictionaries, and handbooks are intended to help you explore topics, learn the basics, and give you a direction to pursue in your article searches.
While background resources are a great place to find important sources to include in your bibliography, do not cite encyclopedias, dictionaries, or handbooks in your writing unless your instructor OK's it. Find articles, reports, or other books to cite instead.