Practise searching for sources of information on the topic you are discussing in class or as an assignment. You can conduct the exercise as a competition and compete to see who can find the requested authoritative sources the fastest.
Look for two or three different sources on the topic discussed in class or in the assignment. One that is reliable and suitable for use in the assignment, one that is reliable but irrelevant, and one that is completely unreliable and irrelevant for the assignment. Read the texts and then discuss how to determine if a source is reliable and appropriate and what makes a source unreliable.