Once you have the content, the following resources may be useful in decoding the text:
The Index of Scripts which can be found in the section What is palaeography? of the website Medieval Writing created by two Australian medievalists can be very useful:
A Google search on palaeography might yield useful results for whatever you are doing, perhaps even access to the relevant pages of some standard text (e.g. Bischoff, transl. Ganz and O’Croinin).
Abbreviationes (ND users only)
An electronic dictionary of medieval Latin abbreviations.
Database of Latin Dictionaries (ND users only)
This database integrates different types of Latin dictionaries, whether modern, medieval or early-modern and links between these different tools.
Vetus Latina Database online (ND users only)
Comprehensive patristic records from the Vetus Latina Institut in Beuron.
Vetus Latina - Resources for the Study of the Old Latin Bible
This useful site gives easy access to a number of digitized biblical manuscripts.
Europa Sacra online (ND users only)
Information on all 1300 medieval bishoprics, archdioceses and patriarchates of the early, patristic and medieval Church obedient to Rome. Prosopographical information on 18,507 bishops, archbishops and patriarchs for the period 1198-1503; and all those cited by Gams for the period to 1198.
Orbis Latinus (for place names)