What is the best way to learn C# and JavaScript? Which classes do I need to take?

Is there any online classes I can take?

Where do I learn this information? C# and Javascript are going to be one of the most difficult things when it comes to making my game and if I cannot understand it then I am doomed. How best am I to learn Javascript and C#?

http://answers.unity3d.com/questions/4897/how-can-i-start-learning-unity-fast-list-of-tutorials