Here are a couple of websites that you may find useful:
The resources of Polish state archives
Tracking down a house – my attempt at explaining how to do it
Scans available online from the state archive in Przemyśl
The bishop’s copies available at the diocesan archive in Tarnów
The bishop’s copies available at the diocesan archive in Kraków
The searchable schematismus of the Przemyśl diocese dated 1898
The distribution of last names in Poland
Latin-English dictionary online
Another Latin-English dictionary online
Latin-Polish dictionary of first names
A list of village owners in Galicia dated 1890
A list of villages with owners and parishes dated 1855