When the student is ready, the master will appear... or in this case, the exercise equipment!
Isn't it great how the universe begins to help you meet your goals?
As far as weight training, as a general overview (I'm running short on time) you want to switch muscle groups with each workout giving other groups time to rest. Your muscles don't grow while you workout, they grow while you rest after a workout. The actual growth of your muscles is an adaptive response by your body to the stress it just underwent and thinks it's going to have to endure in the future.
If you keep workout the same muscle group day-in and day-out, the muscle will stay damaged and your body will never get a chance to rebuild it. So try something like:
Mon: Chest
Tue: Shoulders
Wed: Rest day
Thu: Biceps/Triceps
Fri: Back
Sat: Legs
Sun: Rest day
"Rest day" means muscle rest -- don't necessarily tune out all activity altogether.
Another note: When you train for strength, you want to do low-reps, high-weight. When you trian for size, you want to do high-reps, low-weight. For weight loss, size is more important than strength (bigger muscles require more energy to sustain themselves).
Or you can take a moderate weight and workout until muscle failure (sounds bad, but it's what you *want*). Basically, lift moderate weight until your muscles really can't lift anymore. If you have a spotter (And you should definitely if you're using a bench to avoid injury) have them help you with your last few reps so that you can drain every last ounce of strength from your muscles. The more damage you do to your muscles in this way, the more your body will build them to make up for it.