Morning come with updates and Apt-get

I was just a little bit curious about new updates and installed packages on my system.
Since ive bin installing a few packages through apt-get i wanted to list all the packages so i would know witch ones i had.
I found this apt howto on debians site and found theese commands.

installs new packages.
apt-get install

Update/Upgrade all packages
apt-get upgrade

clean up the local repositories
apt-get clean and autoclean

find packages
apt-cache search

update repository list
apt-get update