Where are instructions to create a histogram in Kibana 4?

I want a plot like this:

  • Y-axis - count of entries.
  • X-axis - bins of another field of type integer.

Example: Plotting number of people with ages 0 to 5, 5 to 10, 10 to 15, etc...

Is this possible?

All official docs are on the elastic.co site. You are probably interested in Kibana 4 Visualize section: https://www.elastic.co/guide/en/kibana/current/visualize.html

The specific visualization you're trying to put together is probably best accomplished with a Bar Chart and Range aggregation: