Eventually you get a spell for Eiko called Jewel which extracts ore from enemies. If you've got access to Daguerro (I never spell that right), you can just as easily go back to the Mist Continent. I suggest popping by the area outside Dali. The monsters there should have plenty of ore to steal.

As for Chocobo Hot and Cold, go to the Chocobo Forest outside of the Dragon Gate of Lindblum. It's the rounded forest east of the marsh and across a bridge. The moogle there will explain the game to you. You get chocographs by playing Chocobo Hot and Cold, then you go out onto the world map and search for the locations pictured on the chocographs. You need to complete this lengthy sidequest to get a majority of the best weapons in the game.

Finding some of the chocographs can be a pain in the ass if you don't know where to look (there's a few that are mostly just pictures of the ocean), so if you're not dead set on doing everything yourself, I suggest searching for a map of all the chocograph locations. You can find one easily on google.