Practice with sources:
Do vaccines cause autism?
Imagine you are producing a pamphlet to educate the general public about whether or not vaccines cause autism. Your pamphlet could be a matter of life or death, so your information sources matter.
Notice that a good subject for research is one that attempts to prove a point.
The examples below are drawn from several different sources. Any or all of them might be a useful resource for a project on this topic. It would depend on what point you want to make, who is the audience, what's the purpose of the project, etc...
Clearly, these different classes of information (opinion, data/facts, knowledge, expertise, and wisdom) can overlap. An expert, for example, is very likely to have expertise, knowledge, and an opinion. In several of the examples, more than one answer could be correct. But, in your opinion, which of these classes best describes the information being quoted?