New job Monday and extremely nervous

I have been WFH for 6 years and I'm starting a new job in-person on Monday (a professional career that I just finished graduate school for).

I am so nervous. Part of me feels socially awkward. I had a great manager previously and fear the unknown. I feel like a kid dressing up in mommy's business suits.

Tips & advice for first day? I know to be early and bring a lunch. I am so used to working virtually I feel lost. What do YOU expect of someone/coworkers on their first day?

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