After the download of the Arduino Windows Installer has finished, follow the succeeding steps to install Arduino on Windows:
- Run the .exe file.
- You will be asked by Windows whether you trust this application, and whether it is allowed to make changes to your computer. Here, you can safely press Yes.
- Agree to the license agreement: click I Agree (you might want to read it first, but that's your decision).
- In the next step, additional features can be selected. Just leave them as they are (in my case, all boxes ticked) and click Next:

The Arduino IDE installation options
- You will now be asked in which folder Arduino ...