Hey Lisa!
Which calendar did you decide to follow? I used the heavy cardio one because my booty is the biggest part of my body. If you stick with it, the results are awesome. I post vacation pictures after finishing a round of it, and people were asking ME about my legs! I couldn't believe it since my legs are my weak area!

Are following the meal plan?
my one issue is since I havent worked out in like ...forever...my knees are not happy.
I don't think working out regularly or ever has anything to do with your knees. They are a joint not a muscle, and they shouldn't be sore. BBL has SO many squats and lunges that move quickly during the cardio routines, and I had to slow them down the first week or two. I still don't know how Leandro is able to bust out some of those lunges as fast as he does lol!! Do what you can, and as long as you are pushing yourself to YOUR limit (not theirs) and watching you diet, you will see results. As you get the moves down at a slower pace, you will be able to watch your knees and eventually speed up with proper form.
You want to make sure your knees stay behind your toes every time you do a lunge or a squat. When I do a squat I picture my butt hitting the opposite wall because I have pushed it out so far....it sounds dumb but it helps.
Do you have any specific goals for BBL?
Good luck and if you have any questions, always message me and I'll help--I know BBL and building a healthy time takes time and some getting used to!