The tutorial only works with Spanish because I haven't had any time to localize the tutorial content. You cannot download the model because it is already included with the installation, and I do not provide a delete button because that would break the tutorial. :)
The default keybinding for closing windows is 'Escape'. If you hover a specific window, it will close that individual window, otherwise it will close all windows.
Let me know if you have any other questions/feedback, thank you!