I strongly suggest the ES 2 day training course. I think it's called Core Elasticsearch. It dives deep into how ES works under the hood. It also provides a grea

I strongly suggest the ES 2 day training course. I think it's called Core Elasticsearch. It dives deep into how ES works under the hood. It also provides a great overview of all the available features. What I loved most about the course is that the presenters were extremely knowledgeable and gave great tips on how to manage your schema with ES and configure the clusters so that you don't encounter performance issues later on. You can do some amazing things with ES, that you wouldn't necessary even know you could. One example is the percolator[0], which can be used to slam new documents against existing queries and essentially classify the document based on search queries. [0] https://www.elastic.co/guide/en/elasticsearch/reference/current/search-percolate.html https://www.elastic.co/guide/en/elasticsearch/reference/curr...