Dear Satya
if you have no chance to get trainings by SAP or other providers you should look for experienced consltants in yout company (who have experience in set up and use of Expert Server and rule sets). If you do not find them it is not easy to start this. Check e.g.
Rule Sets / Secondary Data Determination
We do not have many information here, You have "only" SAP IMG and you get some information if you download Expert Server Software and there is some example in online help (how to create, manage etc. rulesets).
If you have followed the discussions in context of many others you will see that there are lot of challenges here.
C.B.
PS: please check your threads which are still open; Thanks
PPS1 the set up of Expert Server can be "interesting and frustrating etc." as a WWI Server. But for WWI we have quite good documentation. There is nothing similar available on the same level for "Expert server" set
PPS2: please differentiate "Easy Expert" and "Expert" rules. If you buy content you will get "Expert" rules