Generate a full detail guide on asynchronous communication for remote-first companies. The guide must be a practical playbook. It should include detailed sections on: 1. The 'Async First' Mindset: Why it's crucial for remote work. 2. A guide to choosing and using the right tools (e.g., Loom for video messages, Notion for documentation, Slack for quick updates). 3. Best practices for writing clear and concise async messages to avoid ambiguity. 4. A template for making decisions asynchronously. 5. How to reduce unnecessary meetings. Please include a supportive disclaimer.