Linux desktop is a Linux version customizes for end user. There is nothing special or big differences between Linux and Linux desktop. It's just phrases use to say that some tweaks have been done to the Linux network operating system so that a normal user will be able to use it in their daily job. Here are some 'tweaks' that can be spotted in the desktop version of Linux:

• Boot directly into the xwindow (KDE or GNOME).
• Lots of GUI configuration tools.

What really great about Linux desktop is the customizations of tools such as software management (install, remove software) and software support which make Linux seems easier to use and bring some sort of confidence for end users.

You can find some tutorials about how to do things in Linux desktop here.

Linux graphics

How to remove image background using GIMP - A beginner's guide on how to remove background color from image such as a logo image.