WTF Notebook
Every time I join a new team, I go to the next fresh page, and on top of that page I write: “WTF - [Team Name].” Then I make a note every time I run into something that makes me go “wtf,” and a task every time I come up with something I want to change.
A WTF Notebook is a collection of notes that are taken when joining a new team or group. For a couple of weeks, you observe and write down anything that makes you think “WTF” in your notebook. You are accumulating a list of things that are unusual from your outsider perspective. Later, you can meet with the team or group and review what you noted.