How to index a file in elasticsearch?

Question

elasticsearch

Hello!
There are several files in *.txt format ranging in size from 1 GB to 10 GB. They need to find words and phrases. I decided to use elasticsearch, but I can't figure out how to use it. while reading the documentation. Maybe tell me the direction where to dig?

Answer 1

https://habrahabr.ru/post/280488/ - suitable for initial understanding.