In the landscape of modern software systems, the importance and necessity of asynchronous, parallel, and multithreaded programming cannot be overstated. As software applications become increasingly complex and resource-intensive, traditional sequential programming approaches fall short of fully leveraging the available hardware capabilities and delivering responsive, efficient, and scalable solutions. Asynchronous programming enables non-blocking operations, allowing applications to perform multiple tasks simultaneously, which is crucial for handling I/O-bound operations, such as network requests and file processing, without causing unnecessary delays. 

Parallel and multithreaded programming, on the other hand, empower applications to harness the power of multi-core processors, distributing CPU-bound tasks across multiple threads to achieve significant performance gains. In a world where responsiveness, scalability, and efficient resource utilization are paramount, embracing these programming paradigms is essential to building robust, high-performance software systems that can meet the demands of modern users and environments. 

Concurrency in C# Cookbook is one of those books covering the mentioned topics in depth. In the following, you can read the chapter names along with a summary of each chapter.

1. Chapter 1, "Async basics," provides an introduction to using async and await for asynchronous operations, focusing on naturally asynchronous tasks like HTTP requests and database commands.
2. Chapter 2, "Asynchronous streams," explores the concept of receiving multiple data items asynchronously through asynchronous enumerables, discussing their differences from other data types.
3. Chapter 3, "Parallel Basics," covers patterns for parallel programming, specifically targeting CPU-bound work and dividing it among multiple threads.
4. Chapter 4, "Dataflow basics," explains TPL Dataflow, a powerful library for creating pipelines to send data through asynchronously, using a declarative coding style.
5. Chapter 5, "System.Reactive basics," delves into LINQ and System.Reactive (Rx), treating events as sequences of data, and introducing new operators for handling time-related operations.
6. Chapter 6, "Testing," focuses on unit testing concurrent code, showing that it can be done effectively using modern features and libraries.
7. Chapter 7, "Interop," explores scenarios where asynchronous, parallel, and reactive approaches can be combined effectively, highlighting their complementary nature.
8. Chapter 8, "Collections," introduces newer collections designed for concurrent or asynchronous use, including immutable and threadsafe collections.
9. Chapter 9, "Cancellations," discusses the cancellation support introduced in .NET 4.0, explaining how cancellation can be requested and responded to, with a focus on using CancellationToken.
10. Chapter 10, "Functional-friendly OOP," addresses the challenges that arise when combining asynchronous programming with traditional object-oriented programming, exploring friction points and solutions.
11. Chapter 11, "Synchronization," covers common synchronization techniques used to manage concurrent access to shared data in .NET applications.
12. Chapter 12, "Scheduling," explains the role of schedulers in deciding where code runs, discussing the various scheduler types in the .NET framework and their applications.
13. Chapter 13, "Scenarios," presents various types and techniques to address common scenarios in concurrent programming, providing valuable insights and solutions.