It takes experience and discipline to be skilled researcher. Judith Tinnes, in this article on the art of searching for terrorism literature, presents a very thorough and clear description of the research process and types of online resource and provides sound advice on how to track down the best material. It is the best article I have ever read on information retrieval techniques: It instructs the reader in matters of approach and tools, and includes detail on techniques such as those of snowballing, citation searching, and citation analyses. You don’t need to be researching terrorism literature to benefit from this, but the topic does give it an extra frisson.
The Art of Searching: How to Find Terrorism Literature in the Digital Age by Judith Tinnes, Perspectives on Terrorism, Vol 7, No 4 (2013)
This guide provides an overview of information retrieval techniques for locating high-quality literature on terrorism and counter-terrorism. Starting from general considerations on conducting a literature search – taking into account the specifics of terrorism studies – instructions are provided on how to find particular literature types by using different search methods and information retrieval systems, followed by information on how to refine a search by employing focused search strategies. The explanations are enriched with numerous links to recommendable resources. The included examples are focused on terrorism studies, but the general search mechanics can be applied to other research domains as well.