XPRESS - Where to start the learning process

Can anyone point me in a direction to start learning XPRESS?
Tutorials, hello world example etc

Gaurav,
You can follow the below mentioned steps:-
1>Start with XPRESS pdf as:- Know about datatypes<i>,<s> etc then <set>,<append>,<contains> etc and then go for <dolist>
Test it in Rules
2>Know about User view,which is basic for any kind of path expression
You can import the test data un BPE...test data can be a string or can be a view
3>Now try for invoking the methods.

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