In a review of a book by Alice Munro, Charles McGrath, who edited her at The New Yorker, wrote:
Many of these stories are told in Munro’s now familiar and much remarked on style, in which chronology is upended and the narrative is apt to begin at the end and end in the middle. She has said that she personally prefers to read stories that way, dipping in at random instead of following along sequentially,
That’s what I do. Most books I find are improved if I start in the middle and hop around. Doing so adds difficulty and mystery, which otherwise they are deficient in. Same reason I usually like reality shows more than scripted shows, scripted shows lack that attractive raw edge. Spy magazine had an article about writing guidelines for a woman’s magazine. The guidelines said start in the middle: Talk about someone (“he” this, “he” that) before identifying them.
A few great writers (Vladimir Nabokov, Jane Jacobs, Tolstoy) I don’t do this with. Some true crime (The Stranger Beside Me by Ann Rule) I don’t do it with. But most books benefit.