I'm new to your workouts and I had a few questions that I wanted to ask. I hope that you a can answer them all.
1. I'm trying to lose over 20 pounds by the June and with a combination of your workout training and cardio I hope to achive my goal. but what type of cardio should I do? would tae-bo and step be okay??

2. could I increse the number of reps, amount of weight, and add an extra set if I feel my body could hanlde it?

Hello, Tae-Bo and Step Aerobics are great. Just do something that you enjoy and can be consistent with. Walking, swimming, jogging, riding a bike etc, are also great forms of aerobic exercise.

You should be doing one of the Get Lean programs. You can change the weights and make them heavier as long as you can get all the sets and reps on your program. Do not change the sets and reps around as this can totally alter the periodization model of the program. Changing the weight however is good to do if you need it. Here is a response that I wrote to another member who had a similar question. Thanks for using Fitrex.com!
,br> Response:
Great question. Very simply, you should be able to get all your reps. If you do a set and you could have easily done 2 or 3 more repetitions than you should increase the weight. Don't actually do more reps or add another set. However, if you can not perform all the repetitions then you should decrease the weight on that particular exercise. As you progress through your program your body will be changing and this is exactly why we let our members change the weight but not add sets or reps! If you change the sets and reps you would be changing the volume parameters of your program. This can dramatically effect the overall focus of the program. For example, if a program calls for doing 10 reps and the member decides to do 15 reps this would change the focus of the program from hypertrophy to muscular endurance!