In below list of Elasticsearch topics , I try to cover all main areas related to Elasticsearch installation, queries , connectivity , client to CRUD Operation to  elastic data on server . Let me know in comment if anything missing or need more info on particular topic.

Elasticsearch

Elasticsearch Overview

• Elasticsearch Overview

Elasticsearch Installation 

• Elasticsearch Installation on Window
• Elasticsearch Installation in Linux

Elasticsearch Configuration and Queries

• Elasticsearch Cluster Configuration and Queries  (Under Construction)
• Elasticsearch Node Types Configuration and Queries.(Under Construction)
• Elasticsearch Index ,Type, Mapping Configuration and Queries (Under Construction)
• Elasticsearch Queries Type and Example (Under Construction)

Elasticsearch Client

Elasticsearch REST Overview

• Elasticsearch REST API and Configuration

Connection to  Elasticsearch

• Elasticsearch REST Java Connection Client

Elasticserch REST API’s to  perform operation  on Elastic sever data

• Elasticsearch REST Synchronous and Asynchronous Request APIs

Elasticserach REST API’s Response

• Elasticsearch REST Response Handling

Client’s to perform different Operations

• Elasticsearch REST JAVA Client for Cluster Detail
• Elasticsearch REST JAVA Client to get Index Details List
• Elasticsearch REST Index Manager Auto Client for CRUD

Integration

Integrate Filebeat, Kafka, Logstash, Elasticsearch and Kibana