Consider first what kind of information you are searching for, that is, what is your information need. One way of doing this is by simply writing down your thoughts on paper. Helpful questions include:
You also define the criteria that guides your information searching:
In academic writing, the usefulness of different types of sources can be evaluated with the help of the BEAM method (Background, Exhibit, Argument, Method). Your information need defines what kind of material is suitable as a source in your work in question. More information in the video below.
Source: CityU Library