I use Leslie Sansone and Jessica Smith DVDs. Jessica Smith has tons of free videos on YouTube that are all free and range from beginner to advanced users and covers just about anything you want to do and length from 10 to 60 minutes. Her website is
www.JessicaSmithTV.com. I just finished her 6 week Total Transformation DVD program and loved it. Leslie has lots of DVDs to chose from and I find them at my library and can keep for 3 weeks so can vary also for free.