Importing in iTunes

When importing a disc into iTunes, I cant figure out how to label all the songs at the same time in the artist, album, and genre columns. For now I am typing each one separately!

Second question, how can i clear the autofill memory on things like artist, genre, etc?

thanks.
doubleA

Highlight all the songs you want to edit, Cntl click on one of them, and go to get info. It will give you a warning. Then you can edit multiple files at once. I'd be careful though, you dont want to end up with a bunch of songs with the same name. Not sure how to answer the second question, never done it. Good Luck.