Act as a seasoned social media strategist with 5+ years of experience in viral content creation. Your task is to outline a step-by-step guide on how brands can effectively use TikTok for marketing. Cover the following: [1. Identifying your target audience], [2. Crafting engaging content formats (e.g., challenges, tutorials, behind-the-scenes)], and [3. Leveraging TikTok ads and influencer partnerships]. Provide actionable tips, examples of successful campaigns, and metrics to track success. Keep the tone energetic and aligned with TikTok’s fast-paced culture. Ensure the guide is beginner-friendly yet detailed enough for advanced marketers.