I Turned GPT-6 Astra Into the Ultimate AI Second Brain

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My playbook for growing a $1M AI agency: https://app.aiautomationsociety.ai/opaa-ads-optin My FREE resources: https://www.skool.com/ai-automation-society/about?el=astra-6-ai-os&hcategory=youtube-videos&utm_campaign=free-group My Tools💻 FREE MONTH voice to text: https://get.glaido.com/nate Code NATEHERK for 10% off VPS (annual plan): https://www.hostinger.com/vps/claude-code-hosting Karpathy LLM Wiki: https://gist.github.com/karpathy/442a6bf555914893e9891c11519de94f I show you how to turn GPT-6 Astra in Codex into your own AI operating system and second brain, starting with an empty folder. We walk through my four Cs framework, the free skills I use to get set up, and how to connect your tools, build context, and keep improving your system. You'll also see how I organize that knowledge into linked wikis and a 3D brain, plus how I think about choosing a model for everyday work. Sponsorship Inquiries: 📧 nate@smoothmedia.co Connect with me: https://www.linkedin.com/in/nateherkelman/ https://x.com/nateherk https://www.instagram.com/nateherk/ TIMESTAMPS 0:00 My AI OS and Second Brain 2:12 The Four Cs Framework 4:51 Free Skills and AGENTS.md 7:34 Building Your AI OS 10:25 Connecting Your Everyday Tools 11:41 Auditing and Improving Your OS 14:13 Building Context With Grill Me 15:26 LLM Wikis and Your 3D Brain 17:28 Choosing Your AI Model 19:25 Next Steps