You'll probably do best to go to a local gym, say you're interested in joining and ask them about what they've got for what you want. You don't have to join (and they don't have to tell you very much), but you'll begin to get some ideas. They may also have a deal where you can get a day pass and come in and work out, and ask questions. Those should help - and if you join, great for them. And if you don't, it doesn't mean that you won't get fit but recognize that it's a lot easier, when you're on your own, to work legs (because you can walk, run or bike) or core (situps, rowing and other whole-body workouts, even things like swinging a bat) than it is to work arms and chest because, at some point, you'll need the large size and variety of weights that a gym has - and possibly no good place to store all of that in your home.