Ubuntu Desktop - What to install next?

Security

Sophos (Antivirus for Linux): See instruction here: https://www.sophos.com/en-us/products/free-tools/sophos-antivirus-for-linux.aspx
Avast Anti-virus: See instruction from here, http://kumpurmi.blogspot.com/2014/07/avast-linux-guide.html

Choose some security options from here, https://wiki.ubuntu.com/BasicSecurity

• https://addons.mozilla.org/en-US/firefox/addon/noscript/
• https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/
• https://addons.mozilla.org/en-US/firefox/addon/betterprivacy/
• https://chrome.google.com/webstore/detail/adblock-plus/cfhdojbkjhnklbpkdaibdccddilifddb?hl=en-US

Firewall:
~$ sudo apt-get update
~$ sudo apt-get install gufw
   Run gufw in Dash and follow the instructions here,https://wiki.ubuntu.com/BasicSecurity/Firewall

Restrict Dash
~$ gsettings set com.canonical.Unity.Lenses remote-content-search none
   This will tell Dash not to search the internet.

System Settings > Security & Privacy > Search > Off
   This will tell Dash to exclude online searches from its displays.

Crypto
~$ sudo apt-get install seahorse-nautilus
   Nautilus plugin for GnuPG.

Multimedia Support

~$ sudo apt-get install flashplugin-installer
~$ sudo apt-get install vlc 
~$ install JAVA, http://kumpurmi.blogspot.com/2015/03/installing-java-on-ubuntu-1404lts.html
~$ sudo apt-get install ubuntu-restricted-extras
~$ sudo apt-get install libdvdread4
~$ sudo /usr/share/doc/libdvdread4/install-css.sh
~$ sudo apt-get install libav-tools  (This is a command-line video converter, avconv.)
~$ sudo apt-get install phonon-backend-vlc, minitube

~$ sudo apt-get install imagemagick  (This is a command-line for resizing image files that can work on multiple files in one batch.)

Archive Utilities

~$ sudo apt-get install rar

Internet

Google ChromeExtension:

• Google Cast:  https://chrome.google.com/webstore/detail/google-cast/boadgeojelhgndaghljhdicfkmllpafd?utm_source=chrome-app-launcher-info-dialog

Printer - Canon

~$ sudo add-apt-repository ppa:michael-gruz/canon-trunk
~$ sudo apt-get update
~$ sudo apt-get install cnijfilter-ip1900series

or download the driver from here, https://drive.google.com/file/d/0B4CqOxmp5noLdEdmT2lUZmtrLTg/edit?usp=sharing, and
and install the driver at Systems Settings > Printers > Add

Fix Flash

Download flash player installer.
~$ tar -xzf install_flash_player_11_linux.i386.tar.gz
~$ mkdir -p $HOME/.mozilla/plugins
~$ cp libflashplayer.so $HOME/.mozilla/plugins

Theme

~$ sudo apt-get install unity-tweak-tool

File Sharing

Install Filezilla from Ubuntu Software Center

Phone Manager

Wammu

Proprietary Device Drivers

Dash > Additional Drivers
Select device and appropriate driver offered by Ubuntu
Click Apply