This is the Body Pump workout that I do at home: http://www.youtube.com/watch?v=jhaKN8sAocI.
Keep in mind that it is easy to injure yourself with BodyPump. You must use proper form! This means always keep your wrists straight, never let your knees go pass your toes, in squat position all your weight should be on your heels (I lift my toes the whole time to be sure), and keep your chest "proud" throughout your workout. I recommend attending live classes because being in a group will help you get through when you want to stop (and you will want to stop early) and mirrors help with form. Start with only the bar for the first class. If you are not sore the next day, you were probably using incorrect form. If ever you feel like class was too easy (after the fact) or you don't get sore, it's time to up your weight with the minimum increment on each side. This class should always be challenging.
For cellulite, you should do body scrubs: http://www.essenceofmyinstincts.com/the-importance-of-a-good-scrub-body-brushing-and-exfoliation/. In addition, you need to drink a ton of water. Whatever your weight is, divide by half, and that is your minimum amount of required daily water. For example, I weigh 140, divided in half means I need a minimum of 70 ounces of water per day. If you want to lost weight, it's even more: http://www.slenderkitchen.com/how-to-calculate-how-much-water-you-should-drink-a-day/.
This is not easy. It may be the hardest you've ever worked on your body. But I guarantee that if you do an hour class 3 times per week, within a month your body will be changed. And, if you also add 2-3 spin classes per week during that same month, you will go from however you look now back to having a body you will be proud of.
I forgot to add: what you eat is extremely important! Seriously. You can't make a regular habit of eating fast food and have a ripped body. When you start tracking, you may be surprised at where your calories are coming from and which activities burn the most. There are several free programs which help you do this. For your smart phone, MyFitnessPal and LoseIt are the most popular. Enter in all your food, exercise, and weigh-ins. Chances are you'll lose weight from making smarter food choices.
Are you ready for your new body? Then take control of yourself and get it! It only takes 30 days to make an impressive change. This is what I do and it will work for you, too. :)