Reply to Newbie Bedroom DJ

Hey guys I have been looking all over this site and all the info is great a bit overwhelming at times. But I recently picked up a Ion Discover DJ system for real cheap. I know it's super basic but I have very little money right now and am just wondering what else I should buy to get a basic bedroom setup. Like another sound card or monitor speakers I have a great set of headphones do I need any eternal gear . I know these are all basic basic questions. If anyone could just point me in the right direction I would be most grateful. Thanks for all the help guys.