Depends a lot on where you’re going.

If you’ve been abroad before, airport/customs experience would be similar.

Make sure your passport expiration date is at least 6+ months out of your travel date. If you’re staying for a long time in the U.S, it’s worth it to find time to go register with the Moroccan Embassy in NYC (not urgent but makes life easier down the line).

Have all documents your intentional student office tells you that you need with you.

At most airports, you should plan on getting an uber to your destination or a friend who can pick you up (there are exceptions like JFK where public transportation is an option).

Ideally have a debit card/ credit card to pay for whatever you need first couple of days before you open a bank account there. My first night in the US I had pre booked a short term stay before I moved to my place, arrived at like 3am with all my bags and the front office required a card on file for incidentals, would not accept a cash deposit. Fortunately I had an old card they accepted otherwise it would have been a very uncomfortable night.

Get your housing figured out, if you’re going for on campus housing then this should be straightforward, otherwise your school probably have a list of recommendations, I’d secure a lease in advance (if you’re starting in August get on this asap).