* Get a local bank account. Turn off the thing called 'overdraft protection'. It's a loan mechanism.
* Find the other foreign students in your class. They'll know where to pirate all the textbooks. Never pay for a US textbook. Extortionary and when you get your degree no one knows you used pirate texts.
* Choose a smart major. In the US, people will tell you to learn history and shit like that. Waste of money. In fact, in the US, beware of people who try to sell you a "mission" rather than pursuit of a good life. The US allows rapid individual growth. Mission easy to pursue afterwards.
* Do not work. Your F-1 will permit you to under some circumstances. If possible, the only work you should do should be TA/RA stuff or related to your major. Do not work otherwise. It will take away from studying.
* Get a cheap bicycle / skateboard. Cheapest form of transport. US transit is very bad. Even in most unis. Do not buy expensive bike + expensive lock. Get cheap used bike and cheap lock. Skateboard is better since you can carry it with you.
* Find all college events that involve recruiting, symposiums, etc. Attend all for food.
* Get cheapest mobile plan possible. Many MVNOs available. Get cheapest phone. Used preferable.
* Get internships if possible. Permissible on your F-1 / J-1. Very good experience. Live experience >>> in-school learning.
* Americans are almost universally wealthy. Beware of imitating them if you are not. It is possible to be social without keeping up with the joneses.
* Do not self-isolate. Social interaction is the biggest advantage of US college apart from the high quality education. Especially interact with Americans. They will likely spend the rest of their lives in America.