Yet another get good boots. It really matters, especially learning because you need to be as comfortable as possible. Being around there will give you a chance to chat to riders, shops, instructors etc see what they say too, usually a good way to pick up a deal.
Theres nothing wrong with old seasons kit, if its cheap and does the job, its worth it, you wont need all these new board technology fancy stuffs so dont get dragged into that.
Theres also nothing wrong with second hand kit, most of the time its for sale because either someone didnt like it (so hardly used), or someones upgrading and this means they generally know what they are doing, so it should all be serviced. Carefull though because you could end up on a damaged board which when learning will be such a hinderance.
As for lessons, all down to you, some people pick it up, some need guidance but its all practice either way, watch people, even try and steal off other lessons going on.
Buy/ rent a helmet, might seem silly but snows hard, especially learning and falling, maybe impact shorts if you like your bum but tis up to you.
So yeah basically echoing what everyone else has said good luck.