Will iCloud back up any CD's I manually entered into iTunes
Will iCloud back up any CD's I manually entered into iTunes
Only if you have subscribed to iTunes Match, if you haven't then no (even with iTunes Match you should still keep your own backup copy of your library).
Subscribing to iTunes Match : http://support.apple.com/kb/HT4914
About iTunes Match : http://www.apple.com/itunes/itunes-match/