Aww! It's alright Yuna_wannabe....it happens to us all with our first FF....we don't want to waste time understanding sphere grids or junction systems(FFVIII) we don't see it as something necessary and close to the end...we see we have no chance in beating the game...it happened to me and to a lot of us.

So hey, you can either start the game from the beginning or read the manual which explains the sphere grid and all that or someone in the game might be able to explain it to you...forgot who...