Which linux distibution i have?

Are you new to Linux?

SuperX is based on Ubuntu and Debian. Look at: http://www.psychocats.net/ubuntu/installingsoftware

Most useful applications can just be downloaded from "Repository" in Linux.

Does SuperX will have some Package Manager, whether it is called "Software Center", or "Synaptic Package Manager" or some other name.

Or you can use the Terminal. It is not difficult. Just Connect to the Internet, open a Terminal and input: sudo apt-get install hplip

Tip: You do not need to type commands into the Terminal. Highlight the command written on the web page. Move your cursor anywhere in the Terminal and press your mouse wheel or mouse middle button. Automatic Copy and paste! No spelling mistakes! No Typos! No other errors!

Remember! Linux is case-sensitive. Use a capital letter or lower-case letter when specified.