[Inkscape-user] difficulty to reach particular layers(paths)

Hi,

I tried Inkscape. It's a beautiful program and even very simple to handle.

Well, for trial I made an apple ( http://www.hagoschaos.de/h/freunde/apfel.html ). At the end I had about 30 objects(paths), but only one layer. So it became extremely difficult, to change something on any layer down below. It became sort of a lucky chance, when I found a path which I was looking for.

So I would like to know, if there is a more professional way to deal with the paths and layers.

Regards, Hago