I've gotten to the stage where I only have 3gb of my 8 gb nano left (due to deciding I wanted a whole series of the it crowd on my ipod) so I want to delete all the songs I just skip past and don't listen to anymore but I can't figure it out.

I looked at the online maual and it tells me to click on the iPod nano in the source menu. I can't find the source menu, and when I click on the picture of my iPod in itunes and it says summary I can't figure out anything else.

Please help!

You can only do it by syncing. If your iTunes library matches the one on your iPod, just delete the songs off your iTunes library that you don't want and sync to iPod.