refine

Author: terrywbrady

README.md

@@ -54,7 +54,7 @@ Using Docker Containters in existing tools and services (time permitting)
 
 ## Follow Up
 
-If you have follow up questions, reach out to me on UCTech Slack: `@Terry Brady (UCOP-CDL)` 
+If you have follow up questions, reach out to me on UCTech Slack: `@Terry Brady (UCOP-CDL)`. 
 
 ---
 ## Notes

session1/index.md

@@ -5,6 +5,12 @@ nextpage: search.dockerhub
 
 {% include nav.html %}
 
+## What can I do with Docker?
+
+Docker allows you to run many different applications, operating system shells, and programming language environments from your computure.  This is done by locating a *Docker Image* of interest to you and running that image as a *Docker Container*.
+
+## Sample Docker Images to Get Started
+
 - [Finding a Docker Image](search.dockerhub.md)
 - [Run Simple Linux Commands](simple.linux.commands.md)
 - [Run Apache in Docker](run.apache.md)

session1/search.dockerhub.md

@@ -6,7 +6,7 @@ nextpage: simple.linux.commands
 
 Numerous **Docker images** have been created and published to make it possible to run applications with Docker.
 
-[DockerHub](https://hub.docker.com/) is registry of published images.  DockerHub provides search interface to find Docker images.
+[DockerHub](https://hub.docker.com/) is registry of published images.  DockerHub provides a search interface to find Docker images.
 - [Search for Tomcat](https://hub.docker.com/search?q=tomcat&type=image)
 - [Search for Apache](https://hub.docker.com/search?q=apache&type=image)
 - [Search for Ruby](https://hub.docker.com/search?q=ruby&type=image)