Here are number of software packages you may find useful for your computer and smartphone. They are all free-of-charge.
Avast Free (Anti-virus)*
AVG Free (Anti-virus)*
Malwarebytes (Anti-malware)
Skype (Internet Calls, Chat)
LibreOffice (Office Suite)
Picasa (Basic Photo Editing)
GNU Image Manipulation Program (Advanced Photo Editing)
Inkscape (Drawing)
Google Goggles (QR Code Reading, Android Phone)
QR Code Reader (QR Code Reading, iPhone)
*Remember, you need one and only one anti-virus program installed on your computer.