It is beyond the scope of this website to provide translations and transcriptions to the hundreds of opera libretti found in the standard repertoire. I direct you to Nico Castel's monumental works in this area, hopefully they are available in a library near you or you can order them from Leyerle Publications.
Another book that may prove useful
Opera libretti online
Below are links to websites that contain complete libretti (original language only in most cases).