Help Please! Need Help Starting

Need help getting started! I tried to start a html5 course but didn’t get anywhere. I tried to enter code in the space on the right but it I couldn’t click in the box. Then I read something that said use your code editor that is embedded in the website to enter code. So I tried doing it my notepad. Nothing happened. So I tried t o watch the video but I couldn’t get it started. What am I doing wrong?

You aren’t using a mobile browser, are you?

Try changing browser… google chrome or Mozilla Firefox