Hi Aadesh,
I would recommend using define.xml v2.0 documentation. Solid knowledge of the standard is enough for working with the OpenCDISC tool.
There is 1-hour webinar on Youtube about Enterprise version. It could be helpful for understanding general concepts of define.xml tool. https://www.youtube.com/watch?v=8PzYO0YlO0
Also Pinnacle 21 ( pinncale21.net ) provides training and other commercial support.
Kind Regards,
Sergiy