How do I learn the unwritten rules at a new job?

Every workplace has a hidden set of rules that no one writes down, and when they are different from what you know, you will trip over them. That is not a flaw in you. You are reading with a map from a different place. The map worked before; it just does not match this ground yet. Stop guessing and start observing. Pick one or two people who clearly fit in well here and watch how they do ordinary things: how they ask for help, how they disagree, how meetings really run. And find one person kind enough to ask directly. Most people are glad to explain how things work if you ask with genuine curiosity. Give it time. Reading a new culture takes months, not days, and every misread teaches you something. This week, choose one person to quietly learn from, and ask them one honest question about how things are done here. Each answer redraws your map a little closer to the real terrain.