This depends on where you live and who you are.
If you are a refugee and you feel comfortable telling people your story, you have much to contribute to this work. It will be interesting for you and other people in your class to see what connections there are between your experiences of the world so far. You should not feel under any pressure to talk about things that upset you or make you angry.
If you live in a community with refugees, talk to people. This may be hard if you’re shy…but if you’re not it’s the best starting place. A word of caution: you should be sensitive to the fact that many refugees have experienced traumatic events. They may not want to talk about what has happened to them. Also, they may not want to be picked out and identified as refugees. The point about this work is to realise that everyone is an individual, with feelings and ideas. Everyone has a story to tell and everyone should be treated with equal respect.
If there are no refugees where you live, you need to go to knowledgable people, books and the internet. Be careful with the internet. There are some fascist websites that spread hatred about refugees. If you come across these consider why they might be doing this.