This is the website you wanna be in haha seriously it's the best. Under site discussion there's a sticky'd thread called the newb guide. Read through it before you post So you don't look like a dumb newb.
I'd recommend the trick tip forum to get familiar with things like grabs, rodeos/mistys/corks etc. and rail tricks.
Watch some edits, line traveling circus, ski movies, past x games shit. If you haven't realized yet, there's a huge video/ picture part of newschoolers. Check it out.
As for equipment, gear talk will have a lot. It depends on what you ride mostly. Pow/park/groomers. Shit like that. Some of the more popular company's are Armada, Line, 4frnt, on3p, saga(outerwear), k2, moment, atomic, liberty, surface etc.
Some skiers that come to mind are Tanner Hall, Candide Thovex, Will Wesson, Sarah Burke, Maude Raymond, Simon Dumont, Tom Wallisch, Andy Parry, Torin Yater Wallace, Alex Schlopy, Henrik Harlaut, Mike Hornbeck, Bobby Brown. Look some of them up, learn shit about them I guess. They're all pretty awesome.