Never played a Final Fantasy game, but feel myself getting sucked in by the hype
What sort of game is it, what could it it be compared to style wise?
Wait! I would be very careful about playing it as your first FF experience. I haven't played it at all but it is bound to be absolutely brimming with nostalgia and fan service, things which can only be appreciated by those that played the original. Maybe I'm wrong, but I really implore you to test out the original first. Hell, my favourite is VIII, but FFVII is a very special game, if it's even slightly your type of game then you owe it to yourself to play it first and enjoy the remake for the remake that it is.
:edit: as for what kind of game it is, that's hard to explain. It's a story driven Japanese RPG. The game has you following a single protagonist as they go on a winding, epic plot, travelling from location to location with a team, all of which are unique, from their abilities in battle to their personalities and emotional/historical baggage. The worlds are big, and are in a way very much characters in their own right. A huge part of the game is exploring the world (and revisiting areas) as well as experimenting with the various mechanics the game gives you to progress both your character abilities and the multi-stranded plot. It's not the best analogy but imagine a bigger mass effect, with towns instead of planets, much superior character development and plot, and without anywhere near the focus on the dialogue choice. Trailers will help you with the rest. The remake may end up being more linear than the original , but I hope not.