Take a look at the Software Center to install (and uninstall) software from our online repository, which we carefully organize to be safe and up to date.
There is great software for everything from creating music and movies to producing 3D models and exploring the universe.
If you need something that isn't available through us, find out if there is a Debian package or another repository available. That way, it will be really easy to install and you will receive automatic updates.

Installing additional software