database design

Hello, I'm quite new to databases and am doing a project which is creating a library management system and just want some advice.

There will be different types of media available (book,journal,dvd).

My question is which method would be better,

1. Have a media table where all common attributes are located

or

2. Have tables for each media type?

And would I have to make a table for the multiple copies of each media?

Any advice would be appreciated and thanks in advance.