Whats the difference between apt & apt-get

There are two command line tool that does exactly the same thing, the regular apt-get command and the more simpler apt command, what's the difference between these two commands? why they both exist? is apt-get will be remove soon?

How to install & uninstall debian package?

When working with xubuntu or any other ubuntu flavors basically, you will find most of the software are in debian or .deb package. What exactly debian package? how to install and uninstall debian package from my computer? find out in this article.