Background information can help you prepare for further research by explaining all the issues related to your topic, especially when you're investigating a field that's unfamiliar to you. Tips:
You're already familiar with Wikipedia, a free online encyclopedia. Library reference sources have some differences from Wikipedia that you should be aware of, including:
Wikipedia can be a good source to begin with. However, you should balance what you find there with information from other reference sources as well. And make sure you evaluate information you find from the Wikipedia or any other source.