I would think most of us have some kind of shop journal. For a long time I never kept one and that was a mistake. I find it invaluable having kept shop journals for the past 10 years or so. I often need to go back and check how I did something, what kind of finish I put on that bowl or furniture piece,where I got that wood or tool from, etc. I find now that it has evolved into somewhat more than a shop journal as I like to occasionally record thoughts of the day or things that are going on in my life (good and bad!). Mind you it is still mainly a shop journal! I would just be interested in people's comments about the value and nature of their shop journal. And maybe it will encourage those new to the woodworking hobby to start one!