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