How do I install apps on Linux?
How you install apps is determined by your Linux distribution and package manager. Here are some examples for common Linux distributions:

Debian- and Ubuntu-based distributions:
```sh
sudo apt install <package name>
```

Red Hat Enterprise Linux, CentOS, Fedora, and other RPM-based distributions:

Using yum:
```sh
sudo yum install <package name>
```

Using dnf (next-generation yum):
```sh
sudo dnf install <package name>
```

Packages that aren't available in your package manager must be manually downloaded and installed.
I am new to Linux and am not that good with computers. Where should I type these commands and what is a package manager? I think I am using Ubuntu as my Linux distribution.
In Ubuntu you need to enter these commands into your Terminal application. You can find the terminal by pressing the Super (Windows) key on your keyboard and then typing 'Terminal'. Alternatively you can press CTRL + ALT + T to immediately open the default Terminal application.

Once the terminal is opened, you can enter the commands previously mentioned to install new software.

Please feel free to ask me if you require any further assistance.