If you want a more technical overview of the language check out Microsoft's tour of c#.

Features

Lists and Linked Lists

In C# lists and linked lists have different performance characteristics. Whilst a LinkedList<T> behaves the same as... well, a linked list. A List<T> in C# is actually an internally backed array under the hood. This allows List<T> to be fast for access by index and can cheaply add/remove at the end of the list due to its wrapper, but removing or inserting elements at the start or within the list is costly.

Stack Overflow: Difference between List and LinkedList

Explicit Access Modifiers

In C# you can't group access modifiers like you do in some other languages. This makes it a bit longer to write, but means that you won't introduce strange bugs in your code by moving a variable or have to scroll to the top to see which access modifier you are using.

For instance in C++ you can group access modifiers like public and private.

public:
	float distance;
	float speed;

private:
	float time;

In C# you are required to explicitly declare the access modifier. Although C# automatically defaults to private if you don't provide an access modifier, it is HIGHLY advised that you write it explicitly to prevent confusion.

public float distance;
public float speed;

private float time;

Syntax