this depend in your knowlog. yup somtimes there are things in the video plus but it is just explination to undrstand the books ans instruction for the exam and how this information will come in the exam and what is necessary to stress on and some of the exam trick and advise and motivation to study hard and kick the exam.
i hope i answered your question
Well plz read the first few introduction pages of Kaplan books it clearly says" there books must be use with videos for better understanding"
So i think if u have time go for it u won't regret it almost all except patho is useful. Whether ur knowledge is already good see it for review.. Good luck!!