The quality of your internship experience is largely in your hands. Below are suggestions from previous interns that will help ensure a successful internship.
There will be an initial period where you will need to "prove yourself." Show ability and willingness to take initiative, take on responsibility and be flexible.
Don't shy away from responsibility. Be on the lookout for ways in which you can contribute your skills and talents.
Set the tone for the internship early on, discuss a work plan, clarify what your employer expects from you, suggest areas you can help in, and talk over what you hope to learn from the experience.
Projects/assignments to satisfy credits must not take precedent over, or conflict with, work priorities. Discuss these early on with your supervisor.
This is a full-time position. Take it seriously, be on time, keep required office hours, be professional. Always get advance permission from your supervisor if you are going to be out of the office.
The internship period is not for personal vacations. Do your traveling at the end of your internship. If family or friends want to visit you, suggest they come at the end.
Dealing with office politics-don't!! Stay away from getting involved in office issues. You're only there for a short time, and it won't serve you to get involved. Similarly, be careful not to criticize your internship provider in front of others-word gets back!