Start with the source you need
The best place to search depends on what you are trying to find. A search engine helps you explore a topic and discover useful terms. A library catalog helps you locate books and other materials held or provided by a library. An academic database helps you search across records for articles and other scholarly publications. These tools overlap, but they are not interchangeable.
Before opening a search box, write a one-sentence goal. For example: “I need to understand how cities reduce summer heat, then find studies comparing approaches.” That goal suggests a sequence: get oriented, look for broad explanations, and then search for focused studies. If you already know the title of a book or article, your task is different: you are locating a known item rather than exploring a subject.
Use a search engine to map the topic
A general search engine is a practical starting point when the vocabulary is unfamiliar. Search for the main idea in ordinary language, then note recurring terms, related concepts, and the kinds of organizations publishing on the subject. For the city-heat example, an initial search might reveal terms such as “urban heat island,” “tree canopy,” and “cool roofs.” Those terms can make later searches more precise.
Search results are a map, not a reading list you must accept as ranked. Results may include news coverage, institutional pages, commercial material, and research summaries. Check who produced a page, what it is intended to do, and whether it points to evidence you can inspect. If you find a useful study mentioned in an article, record its title or authors and look for the study itself. A summary may be helpful, but it is not always a substitute for the underlying source.
Use a library catalog for books and known items
A library catalog is especially useful for finding books that explain a field, define concepts, or place a narrow question in a wider context. Search a topic when you want an introduction; search a title or author when you already have a citation. A catalog record can help you identify a book’s edition, publication details, subject headings, and available formats. What you can access will depend on the library.
Catalog subject headings can also improve your search. If a relevant book appears under a term you had not considered, try that term to find neighboring works. Read the description and table of contents when available: a book with a promising title may devote only a small section to your question. If your catalog search is empty, try a broader concept or a synonym before concluding that no useful books exist.
Use academic databases for focused research
Academic databases are designed to help you search publication records by subject, title, author, date, and other fields. They are a good next step when you need studies on a defined question rather than a general introduction. For example, you could combine “urban heat island” with “tree canopy,” then narrow the results by adding “surface temperature” if that is the outcome you care about. Available filters and content vary by database.
Read titles and abstracts before collecting full texts. Ask whether each source studies the setting, population, method, or outcome relevant to your question. A paper on rooftop materials may be valuable background, but it may not answer a question about street trees. Databases may show a citation or abstract without providing the full article. If that happens, use the article title or identifier to check your library’s access options.
Move between tools and keep track of your choices
A useful search rarely stays in one place. Start broadly enough to learn the language of the topic, use a catalog to build context, and turn to databases for targeted studies. Then move outward again: an article’s reference list may suggest earlier work, while its keywords may suggest a better search. When results are overwhelming, add a specific concept. When they are sparse, remove a constraint or try a different term.
Keep a short search log as you go. Note where you searched, the terms you tried, and why you kept or set aside promising sources. Save enough citation details to find each item again. This small habit prevents repeated searches and makes gaps visible. The goal is not to use every tool equally; it is to choose the next tool based on what you still need to know.
