To add to my post/request a couple up from this one, here's my situation, very similar to the OP:
I hope I haven't made a colossal blunder... A friend told his next door neighbor that I collected stamps. After her husband and his brother passed away, she inherited
the brother-in-law's stamps and had zero interest in them. Long story short, I took pity on her and bought the stamps from her a couple of weeks ago.
The b-i-l had taken construction paper and put a Scott number at the bottom with a label maker. Then he mounted (not hinged) whatever he had for that number on the sheet - single, plate block, FDC, etc. I've never seen anything like this - some pages have a single stamp, some have one of everything. There are 15+ three ring binders like that.
I'm just starting to think through the best way to at least break even and get these in the hands of someone who can get some enjoyment out of them. I started looking for stamp valuation books and happened to think a few days later that this should be much easier to do via software. I've never done anything with inventorying my own collection, so I'm wondering if it's worth investing in software that will allow me to enter my own collection and then set up something separate while I'm working through the stuff I just bought. But I'm also a computer builder, so a spreadsheet is certainly an option I'd consider.
I would greatly appreciate any opinions more expert than my own.