The author provides a Quick Start guide to connecting C# and MongoDB, starting with setting up a connection between the two using Visual Studio 2019 on Windows 10 and the MongoDB Atlas cluster. The guide covers installing the MongoDB Driver for C#, establishing a connection to MongoDB Atlas, and listing the databases on the server. The code is kept simple and concise, with the whole program coming in at just over 20 lines of code. The author aims to provide a powerful combination of C# and MongoDB, allowing developers to create console, window, and web applications, as well as cross-platform mobile applications using Xamarin.