When you insert a CD and it displays the list of tracks...
Press Cmd+A to select all tracks
Pres Cmd+I to get info for all tracks
Add the Artist, Album Artist, Album name, Year, Genre, Total track count, Disc number and whatever else you want for the imported tracks as an album, and click OK.
For the individual tracks, click the first track and press Cmd+I again, and add the Title and track number, then click Next to go to the second track and so on until you've named and numbered all tracks.
Or
In your iTunes preferences, under the General tab, there's a check box to "Automatically retrieve CD track names from the Internet".
Check that and almost ANY commercially produced CD will cause iTunes to accedd the Gracenote CDDB database and add the info automatically.