A:
Go the the Logitech software support website:
http://support.logitech.com/en_us/software/setpoint
where it will allow you to download the setpoint software. When you open the software, you will get screens that allow you to set-up the mouse according to your liking. Otherwise, you just plug the dongle into a USB port and use it (after you install the battery of course and turn on the power switch on bottom of mouse). You do not need the Logitech Setpoint software to use the mouse with Microsoft Windows, unless you want to change its performance features.