just started working out need ideas

So I got the "From couch to 5k" app and have been using that for my cardio, its been great but I need to mix in some other things. The problem is I have no idea what to do, I got the C25K app because it tells me what to do. I am so new to this whole work out thing that I am at a loss on what I should be doing to lose the weight. I know we need cardio to get our heart going to burn the fat but at the same time I need something to help build up my muscle to help with the burning. So please any ideas is much appreciated. I work out on my lunch at I get 45 minutes to do that. I want to workout out at home but I am still trying to adjust my schedule with the kids and my schooling to fit in time to workout. So please help!