Hi,
I'm reading Hibernate 4 docs.
In Chapter 2, setup and configuration it says to copy hibernate3.jar.

I think it's a mistake. It should say copy hibernate-core-4.0.0.Final.jar, doesn't it?

Thank you,
Ido.

yes, sure and thanks for reporting it.
Feel free to provide fixes as patches, the documentation is part of the sources and can be found in git: https://github.com/hibernate/hibernate-core