Nope, don’t apologize! 
It’s an aerobic walking exercise dvd. You don’t use a treadmill or anything, you just pop it in the dvd player and start walking. It’s that easy! She does different types of walking moves throughout each mile segment she does. Kicking and knee lifts and kick-backs (where you kick your foot back to your butt). It’s a nice variety when you do different versions. And side steps too. Go to Kmart and buy one. They are pretty cheap there and if you don’t like it then you haven’t spent too much. 
Good luck!!