[getting started] [ci skip] Explain in better terms what we are doing with...

[getting started] [ci skip] Explain in better terms what we are doing with render and params[:post] inspection upon first use

guides/source/getting_started.textile

@@ -375,7 +375,9 @@ def create
 end
 </ruby>
 
-The +render+ method here is taking a very simple hash with the key of +text+ and the value of +params.inspect+. The +params+ method here is the object which represents the parameters (or fields) coming in from the form. If you re-submit the form one more time you'll now no longer get the missing template error. Instead, you'll see something that looks like the following:
+The +render+ method here is taking a very simple hash with the key of +text+ and the value of +params[:post].inspect+. The +params+ method here is the object which represents the parameters (or fields) coming in from the form. The +params+ method returns a +HashWithIndifferentAccess+ object, which allows you to access the keys of the hash using either strings or symbols. In this situation, the only parameters that matter are the ones from the form.
+
+If you re-submit the form one more time you'll now no longer get the missing template error. Instead, you'll see something that looks like the following:
 
 <ruby>
 {"title"=>"First post!", "text"=>"This is my first post."}