You don't need to do everything all at once. Sometimes, people feel like they should be always doing stuff because there is so much to do. If you are an extrovert who loves being busy, great! But it's also okay to just spend a night at home too.

Be careful about spending. Restaurants can eat up money fast. Stores and stuff are so close, that it can be easy to overspend.

Start small. When I move to a new city, I like to spend the first week just exploring my neighborhood. I will then focus on getting to know new neighborhoods one by one. Try to walk a lot. It'll give you a better idea of the city than just taking the metro.

If you're walking late at night, stick to major roads with people walking about. Eye's on the streets are a big crime deterrent.

People are busy. You'll probably make friends through grad school, but outside of that, it can be hard. The best way to make friends is through shared hobbies/ classes. I do a sport and take a hobby class. Bumble BFF is nice too. It may take a while to build deep friendships, and a lot of them will feel flakey. You will build deep friendships, it'll just take a bit.

I have more, but I'll stop here. A lot of these are good tips. If you are a woman or nonbinary, I'd have some addition tips that I'll add tomorrow.