Scada, Pid...

I am taking some AB PLC classes and hope to get into some advance stuff such as SCADA, PID...
I looked at AB website, but couldn't find any tutorials on SCADA (maybe I am just blind).
I was hoping if you can direct me to some nice tutorials for beginners or recomand some nice books that describe the steps of analyzing and deriving PID control for a process.

Thanks in Advance

Try here http://www.citect.com for a copy of my favourite SCADA system. Has on line help too.