Hmm there's the general "this year" book, and books for particular topics, equally detailed, just some topics grow to a size where they demand their own book! Also they seem topics I keep returning to, not contained within any one year or month.

Hmm looking in my 2020 book, the chapters are January, February etc, plus To do\Done, Books/papers read, talks watched, Subjects/Projects, Writing, Dreams, Quotes, Software.