Ordinary note pad can open only one file at a time and only one file can be edited at a time.The versatility of note pad is that each file opens in seperate tabs under a main window and you can use a special view in which two documents can be viewed and edited simultaneously.You can open a document by drag & drop. You can also move your document from a position (or even a view) to another by drag & drop.
Another useful feature is the text highlighting.Select any text and all similer texts in the file is highlighted automatically.Press ctrl+Enter and word completion help will be obtained. I recommend you to try Notepad++ and realize how it replaces windows note pad.
Short cuts of Notepad++ are very powerful and will be handy to you.
Open in firefox: Ctrl+Alt+Shift+X
Open in internet explorer: Ctrl+Alt+Shift+I
Google search: Alt+F2
Wikipedia search: Alt+F3
Word completion: Ctrl+Enter