You just installed your shiny new Ubuntu installation. Now you want to install some software, after all applications are what makes the world go round.
In Ubuntu your first stop will be the Software Centre. This is where you can find applications to do several tasks. Whether you need to write a letter or administer the firewall, you can find an app for that in the Ubuntu Software Centre. This application was codenamed AppCenter and later renamed to be Ubuntu Software Centre. Early 2009 Ubuntu developers where of the opinion that package management in Ubuntu could be done much better. Some people however still like using apt in terminal or Synaptic package manager in the GUI world.
Having a software centre was thought to be a good idea, making it easier for the less experienced Ubuntu user to get their hands on packages they need.
This guide is the fastest way for you to find articles about the Ubuntu Software Centre.