# 2 : Search strategy

Lots of information sources (books, encyclopaedias, journals, dictionaries and other materials) are offered also online, either for free or for a fee. The libraries select information sources based on relevance and quality and make the information available for students and teachers in a structured way. For this information, we distinguish the following categories:

- Catalogues: to search for books, magazines and journals or audiovisual materials
- Databases: to search for articles, summaries, etc.
- Reference works: to search for brief descriptions about concepts, people or words.

In this module, you will learn which information sources are most suitable and how to perform a good search, because having good information skills means taking a moment before entering all manner of terms in a search bar.