I did not have muscles (well I had but you know what I mean) and you get stronger (you do some exercises every week and at the beginning you can't do half, at the end you do them easily). I slimmed down from everywhere even though that wasn't the plan initially (I have health problems and so wanted to build my muscles, seriously, I lost 2 kgs wth!). The fat becomes muscle. (Even after a week I began to see changes)
I have finished the beginner's calender a few days ago and have begun the July Calendar I think 5 days ago.
If you want to lose (or gain weight for that matter), you can do one of the meal plans because as Cassey (the coach) likes to repeat your body is 80% what you eat and 20% workout and genetics.