What is console in Javascript? It makes confuse JS beginners.

I started to learn Javascript. But I don't get it what to do with what I learnt when I make websites or apps. I'm about to give up. Don't you feel Javascript is just too difficult? Do you feel you don't know what you are doing when you learn Javascript? And while you are learning Javascript, you must feel "What the hell is Console? Where is it? Is Console a browser window or not?" I felt the same way when I started learning. So I'll teach you what the hell is Console in Javascript and you won't confuse any more! ...