Here are some great posts from the Lucene.Net community:
A very detailed how-to guide for working with Lucene.Net.
“This is one of the best posts I have ever seen about Lucene.NET”
An excellent introductory series from Simone Chiaretta
How-to guide on lazily setting the rewrite method of the query parser instead of eagerly since you may not know it is required until the query is built.
How-to guide on implementing geo spatial search with Lucene.Net in the context of using Examine to manage Lucene.Net.
Here are some great projects built with Lucene.Net:
Examine is a managed abstraction around Lucene.Net. It provides a fluent search API and handles all of the underlying Lucene.Net objects for you.
Bobo-Browse is a powerful and extensible faceted search engine library built on top of Lucene.Net. It is a C# port of the original Bobo-Browse project written in Java by John Wang.
This project allows you to create Lucene Indexes and use them in Azure.
This project implements a low level Lucene Directory object called AzureDirectory around Windows Azure BlobStorage.