This catalogue covers all the known hands in the manuscripts of major English authors of the late medieval period, including Gower, Chaucer, and Langland.
Introduction to Medieval Paleography (University of Leicester)
This site includes information for both medieval and early modern paleography. It also includes helpful bibliographical references.
A brief introduction to the discipline of paleography. This site is most useful for it’s list of basic resources, and includes some links.
This is an online tutorial for the basics of paleography. The paleography section is free, while others, including codicology, require a fee.
Another free tutorial in how to read manuscripts. This series requires some knowledge of medieval Latin.
Another series of self-tutorials. Some of the text on this site is exclusively in French.
In addition to links to paleographical resources, this site also includes links to other relevant topics.