where to get many example for BPM for studying?

Hi, experts,

I am a  developer in webdynpro for java for 5 years in Netweaver.

But now, I have to study BPM in the Netweaver7.3. I hope to get some example for studying BPM, so that I can good at it quickly in the Netweaver7.3.

Do you give me some hint for it?

Thanks a lot for your help!

Best regards,

tao