Make an effort to listen to people. Keep your ego in check - avoid saying “Well at my old company we did …” - just listen to what people are doing here and now.
I would also say try to maximise informal 1-on-1 time with other people, ask them about their work, their opinions, etc. If you are in a larger group don’t opine, just listen. If you have questions, don’t interrupt the group - use it as an opportunity to go ask the relevant person after and build a 1-1 relationship.
Try to keep a smile on your face. Avoid dark humour or joke-complaining.
Edit: Say yes to everything, at least once, for the first year. Any time anyone invites you to a drink or a talk or a meeting, just say yes.