Fit in with the culture: wear a shirt (or whatever the standard is), go to lunch with everyone. Turn up when everyone else turns up. Use the same tools they use (initially). There will be lots of non-nerds there, speak English to them :) Volunteer stuff only when asked. Use deodorant. Reply politely to all emails. Try to stay awake in boring, pointless meetings. Get to know your boss. Your job is to make him/her look good. Ask for a coffee session and quick review after you've been there for a few weeks. Periodically (maybe once a week) email your boss with a SHORT list on what you've been working on and list any possible issues. Dont be afraid to ask questions. Clarify what you're working on and show your approach and get feedback early. Be nice to everyone, from CEO to interns. Being nice will get you far.