Fix typos and grammar, add code examples

docs/notequal_query.rst

@@ -22,11 +22,7 @@ Our SQL query for the above condition will look something like ::
 
 .. image:: sqluser_notquery.png
 
-Method 1 using exclude
-
-.. code-block
-
-
+Method 1 using exclude ::
 
     >>> queryset = User.objects.exclude(id__lt=5)
     >>> queryset

docs/or_query.rst

@@ -5,9 +5,9 @@ How to do OR queries in Django ORM?
 
 If you are using :code:`django.contrib.auth`, you will have a table called :code:`auth_user`. It will have fields as :code:`username`, :code:`first_name`, :code:`last_name` and more.
 
-A common requirement is performing :code:`OR` filtering with two ore more conditions. Say you want find all users with firstname starting with 'R' and last_name starting with 'D'.
+A common requirement is performing :code:`OR` filtering with two or more conditions. Say you want to find all users with firstname starting with 'R' and last_name starting with 'D'.
 
-Django provides two options.
+Django provides two options:
 
 - :code:`queryset_1 | queryset_2`
 - :code:`filter(Q(<condition_1>)|Q(<condition_2>)`

docs/query.rst

@@ -1,7 +1,7 @@
 How to find the query associated with a queryset?
 ++++++++++++++++++++++++++++++++++++++++++++++++++
 
-Sometime you want to know how a Django ORM makes our queries execute or what is the corresponding SQL of the code you are writing. This is very strightforward. Youn can get :code:`str` of any :code:`queryset.query` to get the sql.
+Sometimes, you want to know how a Django ORM makes our queries execute or what is the corresponding SQL of the code you are writing. This is very straightforward. You can get :code:`str` of any :code:`queryset.query` to get the SQL.
 
 You have a model called :code:`Event`. For getting all records, you will write something like
 :code:`Event.objects.all()`, then do :code:`str(queryset.query)`