In the blog, How to get started… Link to online references and a guide to setup your own local environment, I discussed how you can create your own local hybris Commerce environment for hands-on experience. This is fantastic way to put in practice what you learn from both my little blog and wiki.hybris.com but it does come with small limitation. Every 30 days you need to reset (reinitialize) your environment, essentially starting from Day 1. But I do have great news, per hybris, if you contact you hybris Channel manager/Partner, you can sign an additional EULA with hybris which will grant you access to an unlimited developer license which you can install into your local environment to be granted unrestricted access.
Happy playing in your hybris environment!