Leading Bitcoin exchange Mt. Gox has released a new website that provides a simple explanation of what Bitcoin actually is. Mt. Goxs site walks users through the basics — what Bitcoin is, why people use it, and how it works — before leading into a step-by-step guide on how to get started. (Security has been an ongoing issue for Mt. Gox and other Bitcoin-related services.) And, like many other companies this week, Mt. Gox is offering a Black Friday deal: zero-percent trading fees for four days.