So i've finally got my thing going and just a quick question after Ndless finished it said failed to shutdown and then aborated is that normal? or should of i shut it done to work normally?

And second just woundering how i can install EMulators and Roms such as pokemon and super mario there the two main ones i really want.

help is GREATLY appreciated

P.S sorry for being soo noob but this is so new to me and i trying to pick it up best as i can. =)