add more info to docs

README.md

@@ -32,3 +32,23 @@ this in the Vagrant file.
 * Run `vagrant up`
 
 For more information on Vagrant, check out their [documentation](https://www.vagrantup.com/docs/).
+
+## How to use
+
+This is not a Vagrant tutorial; see their [docs](https://www.vagrantup.com/docs/) for more info.
+
+Vagrant provides an elegant way to encapsulate dev environments. Once
+you provision your Vagrant Elastic Stack environment, Elasticsearch and
+Kibana are running and accessible at 192.168.56.5 on ports 9200 and 5601
+respectively.
+
+The /vagrant dir gets mounted automatically and is mapped to the directory
+on your host containing the Vagrantfile. This makes it convenient to
+place files such as Logstash configs, Elasticsearch index templates, raw
+data files, etc. in the same dir as your Vagrantfile and execute Logstash
+against those files by referencing them on the /vagrant mount.
+
+Over time, as you work on different projects, just clone the elastic-base
+project to another directory, place the project-specific files in that dir,
+and you have an Elastic Stack environment specific for that project that
+isn't muddled with configs and indexes from other projects.