A list a took from another thread from /u/douglasg14b

"This is a list I made for another thread, you may find it useful.

In addition to this, download Visual Studio community Edition for a decent IDE.

If you also have the money, Pluralsight is something I would recommend to anyone. Their training libraries are fantastic for almost anyone, especially beginners.

Here, bold are ones I would say undoubtedly get.

Beginner

C# Yellow Book FREE

Data Structures and Algorithms: Annotated Reference with Examples FREE

C# Players Guide

Beginner-Intermediate

Essential C# 5

C# Programming Language

Intermediate-Advanced/Referance

C# 5.0 In A Nutshell

C# In Depth, 3rd Edition

Pro C# 5.0

Program Design and Best Practices

Design Patterns: Elements of Reusable Object-Orientated Software

Code Complete: A Practical Handbook

Clean Code: A Handbook of Agile Software Craftsmanship

The Clean Coder: A Code of Conduct for Professional Programmers

Game Programming And Design

Game Programming Patterns

3D Math Primer For Graphics And Game Development

Game Coding Complete, Fourth Edition

Fundamentals of Game Design (2nd Edition)

Game AI Pro: Collected Wisdom of Game AI Professionals

Introduction to Game Design, Prototyping, and Development: From Concept to Playable Game with Unity and C#

Advanced Game Programming

Real-Time Collision Detection

Game Engine Architecture, Second Edition

Collision Detection in Interactive 3D Environments

Special mention in advanced are Game Programming Gems 1-4 as well as AI Game Programming Wisdom 1-4"