From CatsWhoCode.com there's a new tutorial looking at some of the basics of using CouchDB with PHP (the popular NoSQL database). They don't cover the install of CouchDB, so you'll need to have that up and running to follow along.

Have you ever dreamt about a powerful database that you can access easily, without using the SQL language? That what Apache CouchDB is all about. In this tutorial, I'm going to show you how to get started with this document-riented database and how you can use it with PHP.

They briefly cover what CouchDB (and NoSQL databases) are and how their records are stored - document based rather than row/column based like standard RDBMS. They use the PHPillow library to connect to their database and include the code to do an insert and pull that same data back out.