Things Must be Done After Installing Ubuntu Linux

Installing Compression tools:

$ sudo apt-get install unrar p7zip

Installing Windows Font

$ sudo apt-get install ttf-mscorefonts-installer
$ sudo apt-get install flashplugin-installer


Or you can install Codec to enable play Audio, Video, Flashplugin with single command.

$ sudo apt-get install ubuntu-restricted-extras ttf-mscorefonts-installer

Don't forget to Install Unity twek to make your Ubuntu more beautifull.

$ sudo apt-get install unity-tweak-tool

Installing Wine to Windows Application on Linux

$ sudo apt-get install wine

I will update the list application soon...