Caroline, other than what the others adviced very well, there's the general 1st-year rule: It's filled with general subjects (which will mostly feel like doing high school 'all over again' and is made as a reviewer)--because other than forward the purpose of the course, it's to help those who have gone into a course and then decided to shift, so that they'll cover most of the subjects post-shifting.
Don't fear messing things up
As far as I know, all universities are required (for the betterment of their students) to hold guidance and counseling for course picking, along with individual sessions that you can go to as much as you want (it's free; paid by miscellaneous fees as far as I know) if you're doubtful and want to talk about other things. Counselors in general are trained for this and have to pretty much graduate from a specialized course(?) for it, so the general counselor you'll meet will be pretty much able to help you, and if not, will refer you to someone who can c: (You can also bring up very delicate issues with them that you may fear being criticized/hurt for because of social pressure anywhere else; it's all confidential, and there are specific stuffs which I could share to you over PM about :3)
...Uhh, back into universities, I'm not sure how the academic climate is there in your country
but doing thorough research as to how those universities are (eg Differences between those that do entrance exams vs Fully inclusive ones/open universities) would help, as well as jotting down/noting down what are your concerns or fears! If finances are a trouble, from what I know there are universities that offer working student positions/student assistant work for those who are financially challenged and such. And as far as I know (once more :v), in your senior high school you get a test or opportunity to visit local colleges and attend seminars(?) there to know how and what that university focuses(?) on.
Sorry, am tired x-x
So this is less of a terrify, and more of an annoyance.
...While I'm able to handle nightmares in my lucid dreams, I
thoroughly dislike the endings when they get filled with web-spinning spiders :IWhile my arachnophobia was learned and pretty much helped by my dad (by putting a jumping spider and watching it scuttle up my arm while I stopped myself from shuddering and instead appreciates it's erratic and calculative nature),
I can't deal with web-spinners, especially web-spinners that are in my dreams because that means they're multiplied by bloody hundreds until the area I'm in is filled with webby spiders flopping about or staying in place.On the plus side, they're pretty and colorful and non-bitey. :v
But blargh, so close to my face. Can't even teleport out. I: Usually ALWAYS before I wake up.