Need help!

Hi All,
I am new in OpenCL and this is my first Day in OpenCL.
Could you suggest how should I start OpenCL?
Is any pdf book to read before start?

http://www.khronos.org/developers/resou … ttutorials

Nvidia has a pretty good intro/best practices guide. It’s focused on their GPUs, but has a lot of CL-generic stuff as well.