I would've been happier if you bought a barbell set first. Machines are "okay" for home exercising (way better than not exercising at all), but a free weight set-up will give you more versatility, and will let you do the big movements (deadlifts, squats, rows, presses, cleans) more easily. But we can make the best of what you have.
That link is a great place to start. Basically, for your goals, you need to balance nutrition, strength training, cardio training, and supplementation. But first things first.
What's your exercise history, have you ever worked out before? Do you do any sports? Do you have any injuries, or anything that may interfere with you exercising hardcore now?