An overview of your broad topic area helps you "explore the conversation" by looking at different viewpoint from a non-judgmental standpoint. You can learn the following:
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Use Google Books Advanced Search to look for additional reference books and articles that have been published on your topic.
Google Books Advanced Search tips:
Highlight Key Concepts and use those as keywords for additional searching
Use those as search words to find additional books, journals, videos and websites
In the Gale Ebooks database you can select text and then highlight and add notes to the articles