This was the first exercise video I owned and is what got me hooked. It comprises of three main stages of 12 min. workouts - an aerobic and a strength workout for each level. There is also a fourth level to aspire to for the really athletic! The idea is to alternate aerobic and strength workouts, one each day and gradually progress through the levels. This idea is expanded on by giving rough time scales in the later "Countdown" video.
OK - so 12 min. may sound like no time at all to most readers of this site, but it is quite intensive, and is an excellent video for the beginner, to encourage them to start an exercise programme and inspire them to do more. I did have a noticeable effect on my tone and flexibility when I first did it. Light weights are used in the latter stages.