Want to learn eCATT...

Hi,

I an an ABAPer and i have heard that eCATT is a test tool for SAP. I want to learn eCATT. I have an access to 4.7 system. Is it possible to learn eCATT on this system or do i need to install anything else. Is there any transaction available for this. Pls. let me know.

Also let me know, where can i find the good material on learning eCATT ( except from SAP help).

Thanks,

Pratik