Step by step guide on how to install Firefox.
In your Interenet Explorer tab, As a default browser installed in your Windows 7, Type in Google.com and on the search box type in Mozilla FireFox. And you should have this screen on your monitor.
Click on the Mozilla Firefox website and you will find there Free Download. Click on the Green Squared “Free Download”. 
a dialog box appear and will ask you to save the file.
Click save file.
Once download is complete. Install the Software.
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