Traveling Problems

[Aurion]

I recently started over on FFVII and I'm now past the part where Aeris gets killed. I want to know what to do next.
I mean, I can't remember how to get the Highwind.
Or get into the underwater reactor for the submarine, and I also don't know how to get to the cave where Sepiroth is supposed to be.
I've climbed Mt. Gaia 4 times already and it's really starting to get me mad.
Someone PLEASE help me!

[Peter_20]

Spoilerwarning, please.
Anyway, you simply exit that building you start in at disc 2, and then you follow Sephiroth when you see him.
Continue the path, and you´ll eventually reach the Crater, and then everything flows by itself.

[KoShiatar]

He probably doesn't know what to do after the Schizo boss battle at Gaea Cliff.
Well, what you have to do is climb. Cloud is a little bit dumb in that part and he will not start climbing easily. But eventually he will find a spot on the right of the exit and start climbing...just keep trying . I was blocked there as well. When you've finished climbing, you're in the crater, and from then just follow Sephi up the mountain.