The official documentation has moved to http://docs.couchdb.org — The transition is not 100% complete, but http://docs.couchdb.org should be seen as having the latest info. In some cases, the wiki still has some more or older info on certain topics inside CouchDB.
Learn all about CouchDB views.
Introduction to CouchDB Views An introduction to views
HTTP view API How to use Views
View Snippets Look at how others solved particular problems using views.
Views for Lotus Geeks How to translate Lotus Notes views to CouchDB views
Enable Erlang Views How to enable the native Erlang view server (since CouchDB 0.10.0)