Hi all! First post here.
I've been interested in getting my hands on the Final Fantasy series for a while now, and today is the day. Downloading the original FF7 right now. Any tips?
Sit back and enjoy.
There is lots going on beneath the surface that you really don't notice until a second playthrough, so take note of what people say, and do. The soul of this game really lies in what all the characters are going through internally in my opinion, so making sure you're attentive of what you are being told, and how people behave, really helps give you an enjoyable "OH! now I get it" moment when things come together. Both the plot, and all the characters and their interactions, are pretty layered and the game does a good job at peeling back those layers little by little instead of just spelling it out for you.
Also, the "enemy skill" Materia is GREAT, so don't sit on that one, it can give you a bunch of amazing spells while only taking up one materia slot, so it's great if you want to have a character have some varied magic while still reserving your materia spots for other abilities.
To get the skills though the character with enemy skill equipped needs to be hit by it (and survive), so getting them all is quite hard if you don't know where they are. Whether you think that's worth looking up is up to you.
There are optional scenes based on your behavior and choices as well, so if you really want to understand the full story, you may have to look up some stuff afterwards, or otherwise ask us to clarify, or for advice on if there's something you should do if there is a part of the story you're particularly interested in.
Oh yeah, and like people have said, there are optional characters that it's probably best if we just tell you how to get, or at least give a general idea about, but that's up to you.