Find and extract data from word and paste into Excel

Hey guys,

Got a tough problem with a document and worksheet. I have a document that has about 450 pages with parameters and values listed in exactly the same order. I need to find 4 specific variables and copy the data from the document and paste them into an excel spreadsheet. I need to find and list the Source, Parameter Type, Parameter Value, and Engineering Units. The attached document is a page from the large document. The attached workbook is how I need to have the list created. As of right now I have been copying and pasting but that takes days to do.

I can somewhat understand how a code works when it is written but I don't know where to start. Any help would be greatly appreciated.

Thanks,
Pat