That depends on what you'll be doing with it. Performing the installation is the hardest part of becoming a Linux user (though, as we noted, Corel's distribution makes this much easier). Once you've cleared that hurdle, you'll have a very stable, very powerful, Internet-ready operating system at your fingertips. And with the GNOME or KDE desktop environment your Linux distribution sets up, you'll have an easy-to-use, handsome-looking interface that might make your Windows-using friends jealous. On the other hand, there are no drive letters for Linux: in their place is a single, all-encompassing directory structure.
If you use your PC to handle a few core tasks - word processing, e-mail, Web browsing, and so on - you'll probably get used to Linux quickly.
The learning curve looms larger if you undertake bigger projects. Changing your hardware configuration, for instance, will produce some headaches. And if you like to tweak your OS for greater performance or a customised look and behaviour, you'll have a lot of learning to do. In all such operations, don't expect your Windows knowledge to apply.