Is it right that you first have to root the network space before you can do anything? Is rooting something to be able to install other software on it??
The verb 'to root' means getting root access, which means you'll have a command line, and 'root rights', the right to access anything. So that is the first thing you need to be able to install extra software, the second thing is the software itself.
If this things are not possible. What are all possibilities??
*All*? I'm sorry. The storage capacities of this forum won't suffice to list them all. Your networkspace is 'just another Linux server'. But it's limited by it's memory and processing power. (Especially the memory. Only 16MB, which is very low for a NAS).
Have a look here
, about what people did with their NSLU2, which has comparable possibilities.
Is there a website with many tutorials to reach all these things?
I think it's a good idea to have a look at fvdw's firmware