I have a simple google sheet where I log new acquisitions and finished books. There's not much information there, so it probably won't help much with remembering what the book was actually like.
I start a new worksheet each year, and add and remove columns depending on what I feel I want to know that year and how it integrates with my challenges. I added page counts when I started including challenges based on that, for instance.
I also have a couple of other google sheets that might need updating - a TBR sheet where I delete the row when I've read it, and an ebook sheet which is just for paid ebooks, as well as occasional trackers for specific challenges - and my challenge page on here.
I quite enjoy the process of logging a finished book. It's like an extra little treat for finishing a book: woohoo, I can update my spreadsheets. Seems weird now I've written it down.
