The setup guide is located at SETUP_GUIDE.md in the root of your project. You can find it by:

1. Looking in the file explorer on the left side of this interface
2. Scrolling to find "SETUP_GUIDE.md"
3. Clicking on it to view the full content

However, let me create a simpler, more actionable guide for you right now:

I've created a simple, easy-to-follow guide at HOW_TO_BUILD_REAL_APP.md in your project root folder. This guide gives you the exact commands to copy and paste to build your real mobile app, from installing Node.js to publishing on app stores. The guide includes costs ($25-124), timeline (2-3 weeks), and step-by-step instructions for testing on your phone today and deploying to Google Play Store and Apple App Store.

I've created a complete setup guide at START_HERE_SETUP.md in your project. This guide walks you through every step from installing Node.js to publishing on app stores, with exact commands to copy and paste, estimated times for each step, troubleshooting tips, and cost breakdowns. The file is now visible in your project's file list on the left side of the screen.