You can install Ubuntu on a new (or old) computer as your operating system. It is also possible to use Ubuntu parallel to Windows. You can
Warning: Before you install Ubuntu as a second operating system backup your files and programs (if necessary).
Working with Ubuntu is easy. The basic programs such as a browser, files explorer and OpenOffice (free program that can be compared to Microsoft Office) are pre-installed. If you need other program you should know that programs in Ubuntu are not installed as in Windows. Under applications you find the option to install new programs. All programs are free (also called open source). You can search for them or look up categories. If you click on the program you can say "install". You must be connected to the Internet, because the programs are directly installed from there. Experts can also install programs using the command line.