Convert an excel file with many fields into one with a few specific fields

I could use some help. Long story short, I had an old website that could take information and give me the correct format I needed. My new website cannot. I have a basic knowledge of excel and spreadsheets.

When I get to download a file, I get a file that is called orders with many extra columns and data I need to be gone.

I need to convert that file into a tournament, with the exact columns, names, etc., with just that information.

The Orders file has all the information, but it is not in the correct order, and I can't have the extra data, or the program I use will not be able to read it.

I would greatly appreciate some help.

Thanks again, guys!