If you are unfamiliar with a topic, it is often best to start with an encyclopedia, reference book or review article to gain a basic understaning of your topic as well as terminology used in the field.
Online Encyclopedias, Dictionaries, Handbooks, etc.
The scope of the Encyclopedia of Earth is the environment of the Earth broadly defined, with particular emphasis on the interaction between society and the natural spheres of the Earth. In depth articles written by scholars, professionals, educators, and experts.