1. Check prerequisites: Node.js 16+ and npm.
2. Install Firebase CLI: `npm install -g firebase@latest`.
3. List Firebase projects: `firebase projects:list`.
4. List Firebase apps: `firebase apps:list`.
5. Initialize AI Logic: `firebase init # Choose AI logic`.
6. Choose Gemini Developer API or Vertex AI Gemini API.
7. Implement code for text generation, multimodal input, or other desired features.
8. Enable Firebase App Check for security.