Swift Concurrency by Example

That's where Swift Concurrency by Example comes in: written as a series of tutorials, Swift Concurrency by Example guides you through dozens of common coding problems with hands-on solutions so you can spend less time wondering how to accomplish tasks and more time building your apps.
What's in the book?
Dozens of common problems are solved in the book, including:
When to use async/await and when async let works better
How to call the first async function in your project
Upgrading your code to concurrency using continuations
Creating custom async sequences and streams
Running work in parallel using tasks and task groups
Sleeping, suspending, and cancelling work
Actors and actor inference
And more!