I mind, when i install knoppix in the hard disk I go to the console and go with a ~#apt-get update and thats all??

What package i get whit the default sources.list? take pakages of stable-testing or unstable, i make this question because the sources by default in knoppix have all levels of debian, i mind stable-testing and unstable!! so, what package i download when download something??

And... I must delete the lines of the level i don't gonna use?? i mind, if I want use only the latest packages, i must delete the lines of "stable and testing?? that the way??

I don't understand that very well, some can helpme please??

PD: SOrry for my poor english... i'm watting for yours answers... THANK YOU!!