vlookup help for efficient Excel queries

If you would like to use MS Excel sufficiently then you have to be aware of the advanced querying features of this vastly used financial / calculation tool. Especially the vlookup function can serve as a powerful hammer to nail down those tiny bits of data that you have been searching for since last Christmas.But now that I am aware of these powerful measures I would like to know how to use vlookup. A source if interesting and helpful information is the truly online - online help at Microsofts Office centre. Check it out here:http://office.microsoft.com/en-us/excel/HP052093351033.aspx