Elasticsearch.org
Elasticsearch.com
Elasticsearch Tutorials
ElasticsearchTutorial.com
http://www.slideshare.net/karmi/your-data-your-search-elasticsearch-euruko-2011 < - good http://www.slideshare.net/clintongormley/cool-bonsai-cool-an-introduction-to-elasticsearch <- good Elastic Search Query DSL Explained
Tire – Ruby ES Client –> need to check out the one line install
ES and SOLR Comparisons
http://www.slideshare.net/kucrafal/battle-of-the-giants-apache-solr-vs-elasticsearch