Questions about: 13.апр

Now, an upgrade from Ubuntu 12. 10 Quantal Quetzal to Ubuntu 13. 04 Raring Ringtail is possible, but it is not recommended because the new Ubuntu 13
These directories/places include Home, Documents, Downloads, Music, Pictures mounted drives and network drives (if any). Suppose a situation where you want to add a new directory in it for quick access. Lets say Dropbox