Everyone knows how to copy & paste; right?
Well, in Linux copy and paste can be easier than in Windows: simply highlight the text that you want to copy in one application and, switching to the destination application, click the middle button on your mouse.
However, unlike Windows, the clipboard contents are only available while the source application is open and that can be a little disconcerting for new users. Fortunately, there are a couple of options available from the Ubuntu & Mint software repositories.
Glipper is a clipboard manager that works with Gnome.
"It maintains a history of text copied to the clipboard from which you can choose. Glipper uses plugins to give the user all the extra functionality.
In previous versions Glipper was a GNOME applet, but now it uses app indicator to support Ubuntu Unity and Ubuntu's Gnome Classic."
As I don't use Gnome, I've chosen Parcellite which integrates well with the AWN notification applet.
"Parcellite is a lightweight GTK+ clipboard manager. This is a stripped down, basic-features-only clipboard manager with a small memory footprint for those who like simplicity."
Both are excellent applications and, if you find yourself doing a lot of copy/paste (or authoring your own blog!) either would prove to be an invaluable addition to your application armoury.
Oh, and a little confession is in order: I didn't know about the middle button trick until I started researching clipboards for Linux!
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