I'm back to Debian. Arch Linux is still my favorite distribution, but I'm using Debian for the last months.
Today I want to share something for the newbies.
How to install a Debian package (.deb file)
dpkg -i file.deb
That is it, now if you want to un-install it later.
dpkg -r [package name]
That was using the terminal, if you have a graphic desktop, you may just double click on the deb file.