Final Fantasy VII/Corel prison

After you get out of the ship and head to Costa del Sol, Rufus shows up, makes it clear he doesn't like what Heidegger is doing, and disappears with a helicopter.

There isn't really that much to do here, though you can pick up a bits and pieces of information and a few handy items, and stock up with various interesting items. Hojo is lying on the beach, and seems to give you the idea that Sephiroth was seen in the town and fled to another direction.

In the basement of the big house, you can find free items: The Fire Ring is a pretty neat accessory, so don't forget that! The locals also seem to suggest you should buy some Softs.
 * 1) Motor Drive (weapon for Tifa)
 * 2) Fire Ring
 * 3) Power Source

Corel Mountains
There's really only one way to follow after you leave Costa del Sol. Once you reach mountains through the zig-zagging paths, you'll end up in a place where a man is resting. He seems to have seen Sephiroth. Press onward, and once you go over that top of the trail, you end up in a big Mako reactor. You may think it's a good time to start exploring now and see where you can get, but most of the monsters in this area will be pretty hard to kill, so for now, follow the tracks leading down.

After this, you come to a railroad bridge that looks more like a rollercoaster. Too bad the railroad is in a really bad shape right now. The instructions on the screen will tell what to do. If you want to avoid falling, hit. If you fall, you can guide Cloud by pressing. There are two item bags you can collect:
 * 1) Wizard Staff (weapon for Aeris) on the left.
 * 2) Star Pendant on the right.

There's a save point along the rails, and on the top of one of the slopes, you can find a chest with a W Machine Gun (weapon for Barret). You can also find a Turbo Ether and a Transform materia.

At the rightmost part of the rollercoaster section, go down, and you'll see that the rest of your gang has found what seems like the only way forward, except that the bridge is up. Backtrack, head up, and go to the booth to switch down the bridge. You can climb to the top to take 10 Phoenix Downs from a bird's nest if you wish. When you head back to the lower bridge to follow your friends, you can take a detour on a railway going left. Follow it down and around the ledge. There will be a hidden cave where you can get a Tent, Mind Source, and a Power Source. You can also talk to a guy on a bulldozer. When you're done, head back and follow your friends.

Then there's one last long bridge. Some Bombs seem to be stalking in this area, and these things have a really annoying habit of exploding on your eyes; dispatch them with Ice2 before they cause too much damage.

North Corel
North Corel doesn't have much to see right now either - aside from Barret getting really sad and all after getting yelled at by some of the locals.

There are shops, but save some money for the next section. One of the guys says that a mysterious man, with tattoo number 1, and a really cool black cape, headed to Gold Saucer. You need at least 3,000 Gil just to enter there! If you can afford it, you can buy a Force Stealer from North Corel - a nice double-materia-growth sword for Cloud.

If you are low on money, you can go right, which leads to the world map - you can't get much further out yet, though. Or, you can head left to get to the North Corel ropeway station. Here, Barret will tell a little bit more of the destruction of Corel town before you get aboard the ropeway car.

Gold Saucer
At this point, Gold Saucer is really not that fun and there's really not that much to do, but you've still got to pay for the entry. Pick who you're going having fun with, and walk around a bit. In Speed Square, you meet Dio, the owner of Gold Saucer. He tells you about Black Materia, and how this tattooed cape guy wanted one. He hints that you should check out the Battle Square. Regrettably, you can't get there yet.

In Wonder Square, you'll meet another character who wants to join you: Cait Sith. He'll give you some weird fortunes first. He comes with two cool Materias: Manipulate and an almost leveled-up Transform.

In Battle Square, you find that everyone's been shot. Dio isn't very happy, it seems. You try to flee to the Battle Arena but Dio is more clever than that. As the judge, jury and executioner, he does a really quiet-like trial and sends you to the desert prison enjoying a life sentence.