Professor and GSI office hours are very important resources for students looking to improve their performance in their classes. All professors and GSIs are required to have office hours during the week, usually 1-2 hours at minimum. Office hours times can be found out on the first day of class, on class syllabi, the internet, and at some point, this wiki. Even though it can be tempting to skip this extra "class time", the things that can be learned and the networking that can be achieved during office hours are invaluable for those who want to get ahead.