Just a few corrections to the above post.
Cloud - Omnislash: Exchange for 51,200 BP (Disc 1) or 32,000 BP (Disc 2 + 3)
Barret - Catastrophe: The town in question of North Corel.
Red - Cosmo Memory: You only receive the Cosmo Memory manual when you defeat the Lost Number. Odin is on the floor to the left and the Key to the Basement is inside the safe.
Cid - Highwind: The Gelnika isn't red. The sub you examine to get the Huge Materia is red. The Gelnika is grey and is located near the Gold Saucer area.
Vincent - Chaos: You need to visit the Waterfall Cave on Disc 2, either by Green Chocobo or the sub, with Vincent in the party. After viewing his story, leave and fight 10 battles. Vincent does not need to be in these battles. Return after these 10 battles, with Vincent, to collect the Chaos manual and his Death Penalty.
