kinda hard to tell you what to buy when we have no frickin idea what you already own???
if you already got al ot of gear and no season pass, save it and get a couple more days in at the slopes. Or you could used it for a trip to a different mountain???
if you dont own anything, start with some good clothing to keep you warm on the mountain? that was my first purchase into skiing gear. Good set of gloves and goggles, especially if you ski somewhere that makes snow.
i yowie is a necktube. There is the Yowie, which is just a nice fabric thats really breathable. Or you can get the Artic Yowie which has a nice fleece liner for those really cold days. Its really nice. I would suggest you buy one.