I'm not exactly sure how to interpret this question. Use a notebook for a notebook. I use a simple spiral bound, usually a small 70 pager, one page per workout.
I make sure to write the day and date, exercises, intended sets and reps (written before the first set of that exercise starts), weight used and actual reps per set (written right after each set).
For extra info, you might want to consider jotting down the start and end time for the session (if you have a random session at 10pm when you usually train at 8am, it's worth noting to account for changes in performance or if a session takes you 45 minutes one day and 65 minutes the next), and maybe general notes on how you feel (physically, mentally, etc.) during the day and/or during the session.
Above is an old pic of a random page of my training notebook. I use brackets to indicate supersets, ... to indicate rest-pause sets, and made a note that I stopped a set early because one elbow was bothering me. I don't write down my general warm-up because I do the same thing every session.