Make final edits.

-Tweak wording under "What you'll build" to say what you'll build
-Correct SIDEBAR headings capitalization
-Correct wording of GS titles in SIDEBAR
-Make other very minor edits

README.ftl.md

 <#assign project_id="gs-rest-service">
-This guide walks you through creating a "hello world" [RESTful web service][u-rest] with Spring.
+This guide walks you through the process of creating a "hello world" [RESTful web service][u-rest] with Spring.
 
 What you'll build
 -----------------
 
-The service will accept HTTP GET requests at:
+You'll build a service that will accept HTTP GET requests at:
 
     http://localhost:8080/greeting
 

SIDEBAR.md

-## Related Resources
+## Related resources
 
-There's more to building RESTful web services than is covered here. You can continue your exploration of Spring and REST with the following resources.
+There's more to building RESTful web services than what is covered here. You can continue to explore Spring and REST with the following resources.
 
-### Getting Started Guides
+### Getting Started guides
 
 * [Consuming a RESTful Web Service][gs-consuming-rest]
-* [Building a Hypermedia-Driven REST Web Service][gs-rest-hateoas]
-* [Consuming REST Services with Spring for Android][gs-consuming-rest-android]
-* [Consuming XML from a REST Web Service with Spring for Android][gs-consuming-rest-xml-android]
+* [Building a Hypermedia-Driven RESTful Web Service][gs-rest-hateoas]
+* [Consuming RESTful Web Services with Spring for Android][gs-consuming-rest-android]
+* [Consuming XML from a RESTful Web Service with Spring for Android][gs-consuming-rest-xml-android]
 * [Building a RESTful Web Service with Spring Bootstrap Actuator][gs-actuator-service]
 
 [gs-consuming-rest]: /guides/gs/consuming-rest/
 
 [tut-rest]: /guides/tutorials/rest
 
-### Concepts and Technologies
+### Concepts and technologies
 
 * [REST][u-rest]
 * [JSON][u-json]