open a new workbook with a macro

[SupSleep]

I am making a pricing spreadsheet. I need to have several workbooks (New unique files, one per product SKU) that all refer to a "master" workbook. This way I can update Material Costs on the "master" and refresh them to the individual worksheets when needed.

I realize this is probably simple, but it will be my first macro.

Thanks for any input /Tips.