The latest stable NU-WRF release is Version 11.4 (Ekman patch 4).
NU-WRF User Guide (Ekman release patch 4)
Older guides:
NU-WRF User Guide (Ekman release patch 3)
NU-WRF User Guide (Ekman release patch 2)
NU-WRF User Guide (Ekman release patch 1)
NU-WRF User Guide (Dalton release, v10)
NU-WRF User Guide (Charney release patch 3)
NU-WRF User Guide (Charney release patch 2)
NU-WRF User Guide (Bjerknes release)
Other guides: