In this lesson, you'll learn the basics of building custom Journeys in Bird. We guide you through selecting and configuring triggers that initiate your Journey, such as checkout started, added to list, added to segment, or date property. You'll learn to set up conditional branches to check for customer subscriptions to SMS, WhatsApp, or email. We'll show you how to add messages for each channel and ensure all customers are appropriately reached. By the end, you'll be ready to publish and run your custom Journey.