How to add subpages

How should i add subpages to my website. I mean i have already a page named Music and i want to add a subpage named "english song" to this page like dlwap.n.nu/music/english songs

Dear sir
I can not use or post any thing in my website . what for it ism ? how i shall use it ?
thanks .

Hello

Use extra pages and then link to them from your top-pages.
There us no "subpage"-function in n.nu.