- C# in Depth, 4th Ed. - Jon Skeet - 2019 - The book for understanding the why behind C# features, not just syntax.
- Concurrency in C# Cookbook, 2nd Ed. - Stephen Cleary - 2019 - Practical patterns for async, parallel, and reactive C# code.
- C# 12 and .NET 8 - Mark J. Price - 2023 - Comprehensive, up-to-date coverage of modern C# and the .NET ecosystem.
- Programming C# 12 - Ian Griffiths - 2024 - C# 12 and .NET 8: generic math, pattern matching, modern polymorphism; for experienced programmers.
- Pro C# 10 with .NET 6 - Andrew Troelsen & Phil Japikse - 2022 - Foundational principles and practices; OOP, ASP.NET Core, Entity Framework, Razor, Web APIs.
- Essential C# - Mark Michaelis with Eric Lippert - 2023 - Complete tutorial and reference; best-practice guidelines; free online companion.
- CLR via C#, 4th Ed. - Jeffrey Richter - 2012 - How the CLR and .NET runtime work; types, GC, threading, and assembly loading (classic deep dive).
- ASP.NET Core in Action, 3rd Ed. - Andrew Lock - 2023 - Building web applications and APIs with ASP.NET Core.