Open the Terminal Window & type:
$
sudo apt-get install build-essential
This will install the gcc, g++, make etc., packages.
Also install Firefox browser.It's better that you use FireFox for browsing
$
sudo apt-get install firefox
Download & install FireFox extension from
here
NOTE: when you are installing packages using 'apt-get' , 'Adept Package Manager' shouldn't be running
& vice versa!!
In
Kubuntu there is a Package Manager called
Adept
To run it Open 'Run command' dialog ( Press Alt + F2)
type
adept Click on 'Run' button. Get the sources updates first. From the menu 'Adept'-> 'Fetch Updates'.
Wait it connects to the Net & downloads the source updates. Take a few minutes. After that select on the packages you want to install & right-click on it.
'Request Install' , select all the packages this way.When you are done. Go to the menu 'Adept'-> 'Apply Changes'.
This will download the packages selected by you and install them. Hope you understand what I have said.
You need a Net connection preferably broadband atleast 128 kbps.