Yes, it is possible to backup cartridges you own. No there is no DRM. Yes its pretty straight forward 
I think the only thing is that applications that are not supposed to be there can be removed by leapfrog, but someone posted that you can change one of the files in /etc to get round that problem.
Mick
I think the only thing is that applications that are not supposed to be there can be removed by leapfrog, but someone posted that you can change one of the files in /etc to get round that problem.
Mick