I've managed a number of interns and new hires over the years. Here is what I tell my newbies.
Keep a small notebook, or use a to-do app and track everything that gets assigned to you. If something is assigned to you make sure that you get a clear deliverable time or date and time. If you have any questions about what's been assigned to you ask the person who assigned the task, even it your question doesn't pop up until later.
If you take notes in meeting etc. use a separate notebook or app for the notes. You want to be sure that you don't clutter up your to do list with notes.
First thing in the morning:
- Review your to-do list.
- Check your calendar for the day
- Check your inbox
Before you leave at the end of the day:
- Create a bullet list of everything you did for the day.
- Check your calendar for the next day
- Check your inbox one last time.
- Check to make sure that you don't have any unfinished emails.
Learn how to use all the office tools, even if you think they are stupid, lame, outdated. It's what you'll be using, complaining won't change the fact that you'll need to conform. First impressions.
There will be a lot of things that won't make sense, roll with it. Intra and inter system dependencies drive most things that don't make sense when you walk into a new place. Telling people how to do it better won't win you any points.
Take a few months of your first job and be humble. Listen more than you talk. I like to tell new hires to be like a human Golden Retriever. Positive attitude, want to help always, look like you are smiling all the time. Don't bark unless it's absolutely necessary. Look good at all times.
I'm not suggesting that you completely alter your personality, just ease into things. You'll be working for the next 40-50 years of your life so you have plenty of time to be yourself.