Help with file compression

So, here's the problem. I have to create an archive with compressed films for university but the problem is that i am not sure how to extract the movies out of the dvd's. I tried to copy paste the folders out of them but i usually get some sort of a problem and to be honest i am not sure if this would work anyway. So should i try to rip those movies and then compress them with Winrar? That would work right? Oh, and i have no idea how to rip a movie. Do i need some sort of program?

 

I believe you should have no problem follwing this tutorial on how to rip a movie:
http://elliottback.com/wp/how-to-rip-a-dvd-a-tutorial/
All you need is DVD Decrypter
www.dvddecrypter.org.uk/
and AutoGK
www.autogk.me.uk

 

I worked it out but anyway, thanks for the help. I guess now this can be closed.