Snowboard equipment help?

So i'm gonna start snowboarding this season. This is my first real season and i plan on going atleast twice a week. I'm not really sure what type of board, bindings, or boots to buy though. I know a lot of it's preference but since im not that experienced i dont really have one so i need yours. I'm probably gonna be doing a lot of the terrain parks and just going down the slopes. Also what size board should i get? I'm about 6"0 140 lbs