Many reference sources (encyclopedias, dictionaries, handbooks, etc.) that once were only in print are now online. These are great places to begin research, especially if you are not very familiar with a topic. Encyclopedia articles, for example, highlight the most important facts, events, people, and statistics. Grounded in the fundamentals of the subject, you can then more readily search for, understand, and evaluate more extensive information about it.
Online reference books and resources from the library, such as the following, often yield more reliable information than that from a web search.