Sure, what's offered? Berkeley has something for everyone. The internet is a great place to start. Browse the UC Berkeley website and the rest of My Years at Cal to get a taste, and then talk to friends, advisers, and student groups to see if there's something out there that you want to try, or at least learn more about.
It's okay to ask questions and seek guidance. There are so many people at Cal who want to help students; you just have to let someone know when you need assistance. You can use email, pick up the phone, or stop by an office.
Can't figure out where to start? Contact New Student Services at firstname.lastname@example.org.
You have the right to an excellent education, but you have to take ownership of your Berkeley journey. You are entitled to specific rights around privacy of records, clear financial information, reasonable academic accommodations, and respectful treatment by others. Find a mentor (an upperclassman or a campus employee) you can go to for advice if you feel you're being treated unfairly.
Be mature and accountable for your actions. Always maintain academic integrity, meet deadlines, conduct yourself responsibly, and adhere to campus and residential policies. There are consequences for not meeting these standards, and you don't want your University career negatively impacted.