Maude Manual and Examples
From The Maude System
Manual - Latest Version
The Maude manual for Maude 3.0 is available in PDF format and as a HTML version. The source code for the examples used in the manual is also available here together with the examples from the Maude book.
Additional Resources
The primer for Maude 2.0.1 (but mostly applicable for later versions too) is available here.