I want to make a video games, where do I start?

Just like the title said. I want to make video games but I don’t know where to start. Do I need to learn language like C++, Java etc? Or I just need to learn the game engine like Unity, Cry Engine etc?

PS: I’m familiar with multi media software like Fruity Loop, Photoshop, Coreldraw etc. But please explain it to me like I don’t know anything about computer.