SAP Hybris Integration

Hi All

I am new for the Hybris. I am searching integration help on SCN and other portals. But didn't get anything positive.

Please help to to understand the SAP Hybris Integration with real technical information, Like what are the API and how we use these API in Hybris and SAP.

When i am installing the Hybris software it is asking for registration, I have done the registration 4 days ago but still waiting for the activation of my account:

https://wiki.hybris.com/login.action;jsessionid=67673D03305EE3B0E6E73541D4B344BD?os_destination=%2Fspaces%2Fviewspace.ac…

Please help me, What are the API and how we can use these API. How to integrate the SAP system with Hybris.

Thanks

Arjun gupta