C.B.
HASfit.com has 30 and 90 day work out routines, and hundreds of individual workout videos (free online). I'm really enjoying them and started seeing physical changes in myself after 2-3 weeks. They are designed for working out at home and only require a light set of dumbells. All the videos are short...some as short as 3 minutes, some as long as 30.
Also, it might sound unrelated, but for myself, the 1st change I made when I wanted a physical make-over was to establish a regular bedtime and wake up time...and stick to them. Sleep is so very important to every aspect of life and will help you be in the best shape you can.
After I got my funky sleep habits under control (I am a super night owl and would be up until 2am every night if I didn't have kids to get up with in the morning), I cut out white...white sugar, white bread, white rice, etc. After that I added an exercise program. I'm jut not the kind of person that can handle too many changes at once. :)