judging a book by its cover, picking up the ones that call out to you, reading the first paragraph or page or chapter (but not the blurb on the back, no spoilers please), choosing the one that really hooks you in
I've started to pick up random old orange penguin books from second hand bookstore based of the title alone to expand my reading as I tend to stick to well-known classics. It's been great and allowed me to discover books/authors I would have never read otherwise, would def recommend doing it