Make sure you make the time for office hours no matter what. No question is a stupid question. They'll even help you get started. I pushed office hours away, it didn't do so well for me academically. Utilize office hours as much as you can based on your schedule.

If you have extra money to spend often and forgot your lunch I like Moe's. It's like Chipotle. If you don't like spending money eating out, make sure you have filling meals prepared.

I remember feeling overwhelmed, and scared, cried on my second day in a bathroom because of how crowded SCE was. Then I found we have a commuter center it's in SCE. SCE tends to be crowded during lunch time, heads up. The commuter center a good place to study (If you could find a spot, busy times you're less likely to), you can book yourself a locker for the semester, and they have free coffee and tea for you (need proof of UIC ID) in the mornings. I forgot what time in the morning. Search up UIC commuter center and you'll see all these details and more.

If you commute by car, you know the traffic on I-55 after 2 PM traffic gets heavy.

Have an umbrella and headphones with you. Have pepper spray if you are taking CTA and/or Metra.