I have an Introduction to Hibernate (30 pages aprox./PDF) in Catatan and
Spanish in my personal Web: http://www.froses.com: 
- Catalan:
http://www.froses.com/Assets/Files/Articles/Hibernate_Introduccio.pdf 
- Spamish:
http://www.froses.com/Assets/Files/Articles/Hibernate_Introduccion_es.pdf 

I hope this new Hibernate introduction will be useful for the Catalan (I
think is the unique Hibernate Introduction in Catalan...) and Spanish
people. 

The Spanish version is a translation from the Catalan version. 

Comments are welcome to froses (at) menta (dot) net. 

Thanks, 

Francesc Rosés