The first step of every information search linked to studies is considering the given assignment. This helps you to determine what kind of sources you can use and to what extent the sources need to be scholarly.
Choosing your research topic is another important phase. In most cases, it is useful to search for sources even before choosing or finalizing the topic. Exploring the topic helps you to see if there are good sources available that can support your work with the assignment or thesis.
For more in-depth information about the topic in English, see for example a guide produced by MIT Libraries. Humak library has also produced guides in Finnish.
Key things in constructing a search strategy are:
Example from the ERIC Thesaurus:
The most essential search techniques are different ways of combining your search terms and using the tools with which narrow down your search offered by the search interface.
Among the key tools are: