Need Data anylisis Review Help

I need a tutor to help me go over 60 pages of excel sheets.  This is for my international markets class. I currently have it set up to crunch numbers on the the first 58 pages and print out the GDP of each page and other information n the last two pages. Each page is a country. The problem is I keep getting an error that cause the info to be wrong. I need to fix this without starting over.