he lives in new jersey. im pretty sure NJ isnt going to be hit too hard with snow alot, so honestly, its not worth getting snow tires. especially studded snows.
and theres a ton of good info in here. definitely try sliding around in a parking lot first. it gives you a real feel of what its like to slide around. when youre sliding try different shit to stop your slide. everyone here is saying dont do jerky shit, slam on your brakes, ect. their right, but go try what their saying not to do. it'll snow you how bad it is/what actually happens.
another thing- dont trust other drivers. youre probably going to be nervous, and feel that you dont know what youre doing, but remember, tonss of other people out there are in the exact same situation. just stuff like going right on red or something like that, dont expect other people to be able to stop/turn if they have a turn signal on.
in response to what snwbrdmilf was saying with turn the wheels the way you want to go and hit the gas- a classic noob mistake is over correcting. turn the wheel, but make sure youre not just cranking it as much as possible. that will send you out the other way. and when she said hit the gas lightly, definitely do it lightly. if you hit it too had, the wheels spin, and its no better than just locking up on the brakes.
as for braking, if youre going pretty fast, and coming to an intersection or something. brake early. i try to slow down to 5 or so MPH about 25-50 feet before where im trying to stop. that way if i do slide, i have room for the slide to stop. seeing as you live in NJ, im not sure how populated the area youre driving is, so im not sure how doable that will be if youre doing city driving, but then you should just be going slow in general.