This weekly roundup offers insights into the ELK Stack ecosystem, highlighting developments in Elasticsearch, Logstash, and Kibana, including video tutorials, blog posts, and articles. Key updates include the release of the third installment of Kibana 4 tutorials, a detailed blog on Apache Lucene codecs, and the upcoming book "Taming Search" about search relevance. The roundup also features various global meetups and conferences, such as the Sydney ELK Meetup, Hadoop Summit in Brussels, and .NET Fringe conference in Portland, with presentations and workshops focusing on Elasticsearch's integration with other technologies. Additionally, there are opportunities for training sessions in several cities worldwide, and the post encourages community engagement by inviting readers to feature their own ELK Stack events and presentations.