how do I develop a swift app?

To develop a Swift app, you can follow these general steps:

Learn Swift: Swift is the primary programming language for developing apps on Apple platforms. It's designed to be safe, fast, and expressive. You can start by familiarizing yourself with the basics of Swift. A good resource is the session A Swift Tour: Explore Swift’s features and design, which introduces Swift's features and design principles.
Set Up Xcode: Xcode is the integrated development environment (IDE) for macOS that you use to develop software for Apple platforms. You can download Xcode from the Mac App Store. The session Platforms State of the Union introduces Swiftassist, a new feature in Xcode that helps with coding tasks.
Start a New Project: Open Xcode and create a new project. You can choose from various templates depending on the type of app you want to build (e.g., iOS, macOS, watchOS, tvOS).
Use SwiftUI: SwiftUI is a modern way to declare user interfaces for any Apple platform. It allows you to build UIs with less code and more flexibility. The session SwiftUI essentials is a great starting point to learn about SwiftUI. Additionally, the session Migrate your TVML app to SwiftUI provides insights into using SwiftUI for tvOS apps.
Build and Run Your App: Use Xcode to build and run your app on a simulator or a physical device. Xcode provides tools for debugging and testing your app.
Explore More Resources: Apple provides extensive documentation and tutorials to help you learn Swift and SwiftUI. You can follow along with the SwiftUI tutorials and check out other videos on SwiftUI.

Here are some relevant sessions to get you started:

By following these steps and utilizing the resources provided, you can start developing your Swift app efficiently.