kettle bell

I want to start strength training without going to the gym....Anyone know of any good dvd's for kettle bells at home. Also if you are doing them or have tried them how is/was is working for you. Atm i have been eating pretty healthy and i walk about 5-7 miles a day i have about 50 more lbs (20 down) to lose and i want to make sure i'm toning as i go