Update README to include instructions for creating a GCP project and linking a billing account

README.md

@@ -4,6 +4,31 @@ Provisions the infrastructure needed to use the Gemini Enterprise Agent Platform
 
 > **AI-generated code.** This module was scaffolded with AI assistance. Review all resources and IAM bindings before applying to a production project.
 
+## Creating a GCP project
+
+```bash
+# List available folders to find your folder ID
+gcloud resource-manager folders list --organization=ORGANIZATION_ID
+
+# Create a new project inside a folder
+gcloud projects create PROJECT_ID \
+  --name="PROJECT_DISPLAY_NAME" \
+  --folder=FOLDER_ID
+
+# Link a billing account (required before enabling APIs)
+gcloud billing projects link PROJECT_ID \
+  --billing-account=BILLING_ACCOUNT_ID
+
+# Verify
+gcloud projects describe PROJECT_ID
+```
+
+To find your billing account ID:
+
+```bash
+gcloud billing accounts list
+```
+
 ## Prerequisites
 
 - Terraform >= 1.5.0