I used to do this workout when my daughterr was born 5 years ago. I haven't found any workouts on Youtube that are as good as these to get back to shape. I recommend you to do these and others by Chana Balk if you are looking for something good to kick off!
https://www.youtube.com/watch?v=vwXzXpmwFG4
Today was my second 30' workout with her, I hope to continue to bring my health and fitness to the next level!