# Welcome to GBG GO Tutorials Library

Find technical tutorials and guides that help you build with GBG GO.

## Quickstart guides Build your first journey in the Journey builder. Start journeys and submit data via the API. Launch your first hosted journey. ## API integration guides This section contains step-by-step guides for integrating with GBG GO APIs to execute customer journeys, including both API-first and hosted journey delivery methods. ### API-first integration guides Authenticate, start journeys, and submit data. Handle API errors gracefully. Recommended integration patterns. Diagnose and resolve common issues. Configure webhooks in GBG GO. #### API-first tutorials Integrate Digital ID verification. Build a document upload flow. #### iOS SDK tutorials Build a SwiftUI app that runs a GBG Go journey with document and selfie capture. Replace stub camera views with production Smart Capture SDKs. #### Android SDK tutorials Build a Jetpack Compose app that runs a GBG Go journey with document and selfie capture. Replace the stub capture surface with production Smart Capture SDKs. ### Hosted journeys integration guides Start hosted journeys and fetch state. Handle hosted journey errors. ## Product guides Customise default module outcomes. Customise evaluation decisions. Adjust module settings. PEPs and Sanctions module overview. Understand the difference. Manage auth methods. When to use each type. Pass reference numbers for tracking. Restore a previous version. Update modules in GBG GO. ## Best practices Best practice for grouping documents. Ordering documents and biometrics.