When you do your search, use key words in your general area of interest. If you are searching the network, start with the broad field and follow the path to a more specific area. Look under what is called review articles, review journals, and review books. Review articles organize a great deal of articles efficiently. They are topical reviews written by a scholar who has read about and argued specific topics.
Review journals are helpful tools to give overviews of a specific topic.
Make observations . If possible make observations of the phenomena you are planning to research. However, actual observations may help you understand the science involved in the problem. While reading and observing, take time to think and analyze . You will need quiet time to reflect on what you have read and observed.