What this is all about

Alrighty people.  I counted up and wrote out all my workout videos today and there are 70 workouts to be done.  All different.  36 of them are either p90x, p90x3, or Insanity.  The other half are Jillian Michaels, Bob Harper, Turbo Jam, and The Biggest Loser workouts.  So....I've got some variety.  As the new year has begun, I thought I'd spice up by workout life and try to get through each workout without repeating any of them at least once. I have done all of these workouts and  have been exercising my whole life, so I do have a smudge of credibility.
I currently have a 2 1/2 year old and a 6 month old.  The infant is breastfeeding, the toddler is definitely NOT.  haha.  I've got a husband that is incredibly busy this semester, finishing up school, doing student teaching, and working.  I work two nights a week as a nurse on a cardiac unit, working between 12-13 hrs a shift.  A busy life gives purpose, right?
As for my current health, it's somewhere in the middle.  I'm about 5'5 and medium slim build.  I'm in moderate shape and have pretty common eating habits.  Ya know, trying to eat out less, cutting out sugar, blah blah blah.  In reality I make a batch of chocolate chip cookies every week and try to blame it on my pregnant neighbor who likes them. I get a candy bar as a treat when I go to the grocery store because I deserve it after lugging around two shopping carts and 3 boys (husband included).  But, I recently started cutting all that out and only eating junk food once a week.  I'm doing great so far because today is my first day.  I do exercise about 4 days a week doing a variety of things, usually I try to get in as much sweat as I can in half an hour.
So I have a Garmin Vivosmart that I use on and off as well as a heart rate monitor. I'm going to try to figure out the calories that I burn for each of these workouts as I've found that it's been difficult to track that down  when you're counting calories.  I will not be counting calories, that's not my aim since I'm breastfeeding. 
I promise, I do know what I'm doing.