During your internship, you'll be evaluated more so on your soft skills rather than technical skills. That means they're always looking at your behavior and attitude. If you're enthusiastic and coachable, you can learn anything that they'll need you to do.
That said, you need to take a good look around at the people and the work itself and see if you'll be happy/content working there. An internship is like a trial run for the company, it's not the end all be all of your career starting point.
Always take notes. For everything. Every little thing.
And remember, you're always going to be your harshest critic... don't be hard on yourself in the beginning. A positive workplace knows that this is your first time working there so they won't hold unreasonable expectations over you.
You’ll learn a lot of things as an intern about your career and life in general,
* Don’t expect a gold star for good work
* A positive attitude will get you a lot further than a negative one
* It’s never too early to start building your professional network
* Once you have completed your internship, put the effort in to maintaining the relationships you built during your time there
* Punctuality is incredibly important.
* showing a bit of enthusiasm in your work.
* An internship is a learning opportunity, so make the most of it by getting involved in projects where you can, learning a bit about how the business runs, practicing using new tools
* As an intern, it’s likely that you may be lumbered with the slightly dull tasks that no one really wants to do,
* Internships can be a lot of fun, so relax, get to know the team and enjoy yourself!
Go in with an open mind willing to try anything that is presented to you. Don't be afraid to ask questions. Learn as much as you. You will find that this experience will be invaluable to you as you begin to look for a full-time job. Your performance could land you a job offer. If you decided to look at other companies your intership will show you have valuable experience that other applicants may not have.
Hope this helps!