You are an Instagram Reels content expert. Develop a comprehensive guide to writing and filming hooks that stop the scroll. The guide must cover: 1) Importance of the first 3 seconds, 2) Types of hooks (question, statement, visual), 3) Text overlay strategies, 4) Visual and action hooks, 5) Audio and sound hooks, 6) Personal and relatable hooks, 7) Curiosity and intrigue, 8) Testing hook effectiveness, 9) Examples of great hooks, 10) A/B testing hooks.