DOCS-93 sharding index page edits

Author: Sam Kleinman

aspiration/sharding.txt

@@ -5,26 +5,28 @@ Sharding
 .. index:: background; sharding
 .. _sharding-background:
 
-MongoDB provides an automatic sharding facility that makes it possible
-to distribute a single database across a cluster of machines. Sharding
+MongoDB provides an automatic sharding features so that you may
+distribute a single database across a cluster of machines. MongoDB
 uses range-based portioning to distribute :term:`documents` between
-MongoDB instances based on a specific ":term:`shard key`. 
+members of a shard cluster based on a specific ":term:`shard key`.
 
-For a high level introduction to the underlying concepts and operation
+For a high-level introduction to the underlying concepts and operation
 of sharding, consider ":doc:`/core/sharding`." Once you understand how
 sharding works and you decide to use sharding in your deployment, the
 ":doc:`/administration/sharding-architectures`" document provides an
-overview of basic system architectures. 
+overview of basic system architectures.
 
 Administrators of shard clusters should consider the
-":doc:`/administration/sharding`" document which contains a catalog of
-procedures for configuring and maintaining shard clusters, in addition
-to a :ref:`troubleshooting <sharding-troubleshooting>` section to aid
-in diagnosing common issues with sharding.
+":doc:`/administration/sharding`" document. This resource contains a
+catalog of procedures for configuring and maintaining shard clusters,
+in addition to a :ref:`troubleshooting <sharding-troubleshooting>`
+section to aid in diagnosing common issues with sharding. Use the
+:ref:`sharding tutorials <sharding-tutorials>` for instructions on
+complete administrative operations.
 
 Finally, if you're interested in learning more about the internal
 operation of sharding, the ":doc:`/core/sharding-internals`" document
-provides a more in depth description of how MongoDB implements
+provides a more detailed explanation of how MongoDB implements
 sharding.
 
 Documentation
@@ -52,4 +54,4 @@ Tutorials
    tutorial/add-shards-to-shard-cluster
    tutorial/remove-shards-from-cluster
    tutorial/replace-one-configuration-server-in-a-shard-cluster
-   tutorial/replace-all-configuration-servers-in-a-shard-cluster   
+   tutorial/replace-all-configuration-servers-in-a-shard-cluster