Well, that could vary. Sometimes it's a character within the story, and other times it could be an omniscient narrator. You'd have to analyze the writing style and perspective to determine exactly who's telling the tale.
It was common to do part-time proofreading work on the Internet, especially on some online education platforms. These platforms allow individuals or institutions to set up their own courses and provide online teaching and tutoring services. In this case, students can find part-time proofreading opportunities on the platform to support themselves or others. Some common part-time proofreading platforms include Coursera, edX, Udemy, and so on.
The narrator in The Odyssey Book 12, which is Homer, is significant as he sets the tone for the entire book. He creates a sense of mystery and danger. For instance, when he describes the Sirens, his words make it seem like a truly perilous encounter.
The narrator in The Book Thief is Death. This choice by the author creates a sort of omniscient viewpoint, allowing for a broader and sometimes poignant look at the events and characters.