Helllp!

After i destroy the flying thing and galuf goes to the crystal world, where can i find cid and mid :D please help

either the library of ancient or the underground place where you find the airship.

Head back to the Crescent Isle Hideout (by landing your airship directly onto the pad, of course), and go into the library. There, on the table, you should be able to find a note from Cid and Mid talking about how they are going to return the adamantite to where you found it, so follow them there!
You should be able to pick up from here.

the first meteor that fell

Thanks