Like i said in the beginning just get a bench
That can adjust both upward and downward
I work out every day and I keep in shape i know what im talking about
Lock your feet onto the little rubber handles down below, get maybe a 10 pound weight and do some sit ups
On the other side get some dumbbells maybe 10-15 pounds
You can work out your triceps, biceps and even forearms
On the bench (optinonal for your chest) you can do butterflies and regluar benching
Light weights will tone you and not make you buff, In order for you to buff out, you need years of bulking
Light weight and lots of repitition will help you