(If you really want to learn how to use LilyPond,
you might need a
more convenient editor than the notepad; for example, try jEdit (
www.jedit.org -- download the "development version"), with its
special
LilyPondTool plugin that is very handy (you have to download it in the
"plugin manager").
I recommend NOT using the latest
version of jEdit (4.3pre12) as I found it didn't play well with LilyPondTool.
Go get jEdit 4.3pre9 and I believe you'll
be OK.
I agree that LilyPondTool is very helpful.