Data from different sources and of different formats

Reliably and securely take data from any source, in any format, then search, analyze, and visualize it in real time - is what ELK is about

I have word, pdf, ppt documents. Are these called formats? How do I ingest these into my Elasticsearch service?

Different sources - googledocs, sharepoint, directory in my computer - How do I configure Elastic search to accept documents from these sources? I got my elasticsearch free trial yesterday

You can use our Enterprise Search solutions - https://www.elastic.co/enterprise-search - or you can build something yourself to do this.