I need to know the best way to organize a bookshelf with a mix of fiction and non-fiction books. To make this easier, I want the response to have a title, and be split into 3 sections, each starting with "SECTION" X. In the first section, provide tips for organizing by genre. In the second section, give advice on organizing within each genre. In the third section, suggest a method for color-coding books. Ensure that the response is at least 100 words and includes the keywords "genre," "shelf," and "color."

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