Getting to know everyone. Probably one on one with every team member which is all you listening. Keep things the way they are initially, identify the problems, come up with a smooth strategy to transition from now to a future state.

Leave your ideas at the door and assess what is good for the team. For example you love Gaant charts and were super successful with them at your last company. Don’t introduce them here unless appropriate and probably not at the start. Unless perhaps everyone else is asking for them and it makes sense. What I am getting at as it shouldn’t seem like you are bringing your ideas and commanding, but you are listening and leading.

You also need to do the same exercise upwards too! What does the boss think the problems are and how will you address them.

Find out what the tension is between the works and the management. There is always something!