How to learn Hibernate quickly

Hello Experts,
We are using java 1.8 with eclipse. We have a very old java (1.5) application with hibernate, I need to rewrite it, but I have not wrote code from scratch with hibernate before.
Which hibernate version supports java 1.8?
And could you please tell me what is the best resource to get familiar with recent Hibernate? step by step sample projects is excellent.
Thank you.

This was discussed before: Study Hibernate - #4 by Harsha1919
The release overview also clearly mentions the supported Java versions: Releases - Hibernate ORM