To begin with the 'Best Fear Street Novels', first, understand the general theme of the series which is horror and mystery set in a fictional place called Fear Street. Then, I would recommend starting with 'The Lost Girl'. It has a simple yet captivating story. A girl goes missing and as the story unfolds, you are introduced to the strange and often terrifying world of Fear Street. As you read it, you'll get a feel for the writing style and the kind of horror elements that are common in these novels, which will help you decide which other 'Best Fear Street Novels' to explore next.