My first BoS was a book that I had the seller customize the cover.
I don’t think I’ve ever written in this one, the fear of ruining the beautiful journal is great.
I started my own BoS first using a blank journal
You can see more pictures of both of them here starting at #6
Once I filled that up, I made my own bound journal.
More info on creating the journal is here and here
And to organize and keep track of all my downloads and digital magickal information, I am using Notion
I’m about to fill up my custom journal so I’m gathering supplies to make a leatherbound one for my next book.