Here are some hints & secrets from Final Fantasy VII.

¤ Chocobo Tricks

While racing the chocobos, hold L1 + L2 + R1 + R2 to increase your speed. To increase their stamina, hold R1 + R2.
While choosing a chocobo to race, press L1, L2, R1, R2 or any direction to pan, zoom and rotate the chocobo you're viewing.

¤ Quick Money

Go to a small island south of the map, called Cactuar Island. If you fight there you can fight against Cactuar. You can't beat him with magic or weapons, but he can be defeated by summoning Chocobos or Mogs. If you manage to kill him he's worth 10,000 Gil!

¤ More Easy Gil

In the cave before Sephiroth, there is a room with a bunch of roots around. In this room, you can fight little orange bouncy guys called "Movers". They have fairly low HP, and don't do much damage. But, for defeating them, you get a whopping 90,000 Gil!

¤ Lucky 7 Fever

Try to get a character's HP to 7777 with Exp. points and switching Materia around. Once this is done the character will go berserk in battle and hit the enemy with 7777 points damage until the battle is over.

¤ Tetra Elemental

South of Cosmo Canyon is an island you can barely or maybe not even see on the world map. But this small little island is filled with Cactrots. Be sure you have the Morph Materia equipped along with a weapon with a good attack%. Go to battle and you will encounter a Cactrot. The Cactrot has 6,000 HP so take off at least 5,800 to 5,900 damage points, then use Morph on it. If you don't hit him the first time with Morph then just keep on trying because most likely you will hit it with Morph. You now have a Tetra Elemental. This rare relic drains Fire, Cold, Lightning and Earth attacks.