Hi
Music is easy, and can simply be done with Media Player or itunes.
To copy movies then you need what is called a DVD ripper software (search in google) . I have used Alcohol 120 and Imtoo which are both pretty good (Imtoo converts the movie for a PSP or mobile phone

) The ripper software allows you to see the chapters on a DVD and convert them to MPeg files on your hard drive.
Andy