Webi with Bex queries

Hi ,

I am new to 4.0 we are created webi reports based on the Bex queries with out universe..

can any one share me the documents or links  webi Bex queries ,what is possibility's and customization in the webi level like drills,prompts and conditions ........ I have conditions(CKF,RKF) in the Bex level those are directly coming the webi level or not.

Thanking you Advance

Regards,

G