I am starting college and I picked maths biology chemistry and philosophy. Does anyone have tips?

Drop philosophy. The entire subject consists of memorizing names and theories without ever gaining understanding of what you are talking about. You learn to talk endlessly without ever speaking a verifiable fact.

Do not study biology and chemistry at the same time. Each requires your full attention for 1 1/2 to 2 years just to learn the words so they can start to teach you something.

Do your assignments right after they are assigned, rather than right before they are due. That way test time becomes a non-event because you are always perfectly prepared.

Get "Dress For Success" by John Molloy and consider his advice for students:
- Vocal skill will affect your earning power more than any other detail.
- Acting skill will get you a job offer even when you are not qualified for the job.
- The most important benefit you get from school is your address book.
- The difference between a successful person and a very successful person is that the latter knows hundreds more people, and knows them quite well.
- No school will teach you any of the above. They don't even teach how to do well in their school.