Great question, I've been struggling with this myself.

I'm trying to do an Excel inventory for Garrett's collection for two weeks and I'm having trouble with it.

(It's been YEARS since I've worked with Excel) I gave up on Excel and went to HA online and tried their inventory program but Garrett didn't like the format of it. We're having trouble putting in slab info from non PCGS holders on HA, so we're back to Excel. Does anyone have a template they could share from Excel or tips on what you included on yours? If you do, you can PM me. I use a MacBook, and I haven't found any of the pay programs that are Mac compatible. Excel and Word can somehow magically take Windows files and convert them to the Apple/Mac format.

Thanks!