This is my (physical) book collection. The primary purpose for this list is having an overview of all the books that I have on my bookshelves, but also to have a link to my books list, that I provide on my personal website. The books on this list are in English, Danish, and Bosnian/Croatian/Serbian.
I add it here whenever I get new books. It's as simple as that. I don't have a list of all my digital books.