Jon Skeet's C# in Depth is pretty solid. The fourth edition isn't done yet - and at the rate of change lately may be out of date by the time it is released, bu

Jon Skeet's C# in Depth is pretty solid. The fourth edition isn't done yet - and at the rate of change lately may be out of date by the time it is released, but it goes into some great detail on the guts of the language, and how it has changed over time. https://www.manning.com/books/c-sharp-in-depth-fourth-edition https://www.manning.com/books/c-sharp-in-depth-fourth-editio...