The books are actually quite good and give you the material that allowed Anthony Hopkins to portray such a great character.
The bad movies ("Red Dragon", "Hannibal") should be avoided.
I started "Hannibal Rising" (the 4th novel) with some trepidation after the so-so "Hannibal" movie, but got caught up in novel and the character.
So if you are going to read - do the novels in order:
- Red Dragon
- The Silence of the Lambs
- Hannibal
- Hannibal Rising
You will thank us later.