Budgeting: There's a wide range of options you can choose from depending on your budget. On the cheaper end, you can live in a house in a double which will be $550-$800. On the more expensive end, you can get a single in a house which will be $900-$1400. The closer to College Ave the house is, the more expensive it will be. The more people living the house, the cheaper the rent will be per person. Leases are 99% of the time going to be 12 month leases, so make sure to budget accordingly. It's common for people to sublet their place for the summer to someone is doing an internship in the summer to save money on rent when they're not living there.
Roommates: Make sure your roommates are ready to sign for housing when you start looking and if you're looking for roommates make sure you have a full group before you decide on a house. Make sure you facetime or meet your roommates in person before you sign for a house. Also make sure to get a tour of the house you plan on living in before signing a binding lease for it.
Amenities: For houses, most landlords don't include utilities in rent, which can come at to $100/person per month. You or one of your housemates will be likely required to setup a PSE&G account for electricity/water.
IMPORTANT: If you have a car, go for a place that has parking because street parking in New Brunswick is the worst. Most houses have parking but some don't. Before you sign for a house make sure you and your buddies are on the same page about who's getting parking spots at your place.
Security Deposit: Most landlords require 1.5 months rent for the security deposit which you give to them along with the signed lease to secure the house. Often times a group will be ready to sign for a place, but they can't get the security deposit together and another group swoops in and takes the house. If you trash the place you probably won't get all of it back, so don't do that.
Paying Rent: Rent is not done on an individual basis. You and your housemates pay as a group, the entire rent at once. That means that you guys can agree on rent splits based on room size, etc. If a place is $4400 in total rent per month and it's you and three friends, you don't pay the landlord $1100 for your split. You guys all send it to one person and they give it to the landlord. Most landlords take venmo/zelle, though some are stuck in the 80s and they only take cash or check.