Congratulations on your weight loss. I suggest you have one of the trainers at teh gym show you around. The gym might offer 1 or 2 free training sessions for mew people. If not, I suggest you hire a trainer for just 1 or 2 sessions to get you going. You should build up to 30 minutes of cardio and start with 8-10 different resistance exercises so you don't get overwhelmed.
I will post a starter weight lifting program for you. The program is broken up by muscle group (chest, back, shoulders, arms, legs, abs) and is three days a week, but you can modify it if you like for more or less days.
Day 1: Chest (bench press with bar or dumbbell press, flyes, pushups), triceps (bench dips, kickbacks, )
Day 2: Back (bent over rows) biceps (curls, standing or seated)
Day 3: Shoulders (lateral raises, front raises), legs (squats, lunges)
Do 10-12 repetitions, 1-3 sets per exercise. That means select a weight you can lift 10-12 times to momentary fatigue with good form. When you can easily lift the weight 12 times, increase the weight.
You can experiment with different splits. For instance, you could try the following
Day 1: Chest (bench press with bar or dumbbell press, flyes, pushups), Back (bent over rows, pulldowns),
Day 2: biceps (curls, standing or seated), triceps (bench dips, kickbacks)
Day 3: Shoulders (lateral raises, front raises), legs (squats, lunges)
There are dozens of exercises for both your lower and upper body. I've given you just a few. You can go to the www.exrx.net for pictures and videos of exercises organized by muscle group and select any of them.
For weight loss you can post your diet-related questions to the Diet Community:
http://exchanges.webmd.com/diet-exchange No matter how much you exercise you won't lose weight unless you burn more calories than you consume. So if you need to lose more weight (you didn't post your height and weight, so I can't say), then checking in with the diet and nutrition staff will be helpful.
And here's the Food and Fitness Planner
http://www.webmd.com/diet/food-fitness-planner/summary And the exercise calorie counter:
http://www.webmd.com/diet/healthtool-fitness-calorie-counter Continued next post....