Right click on a webpage and click on inspect element then click on console you can get it there.
what free editor was that?
I’m not sure which video you’re referring to but the free editor might be VS Code?
If you’re using an online editor, some will have a “console” built into the UI (for example: CodePen). If you are using an online editor, or looking at a live website, you can open the browser console with F12.
Most probably CodePen.