Small typo fixes in quickstart docs

docs/quickstart.rst

@@ -74,7 +74,7 @@ Build a message
 Initialize a New Cap'n Proto Object
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Now that you have a message buffer, you need to allocate an actual object that is from your schema. In this case, we will allocate an `AddressBook`::
+Now that you've imported your schema, you need to allocate an actual struct from that schema. In this case, we will allocate an `AddressBook`::
 
     addresses = addressbook_capnp.AddressBook.new_message()
 
@@ -98,7 +98,7 @@ For now, let's grab the first element out of this list and assign it to a variab
 
     alice = people[0]
 
-.. note:: It is a very bad idea to call `init` more than once. Every call to `init` allocates new memory inside your Cap'n Proto message, and if you call it more than once, the previous memory is leaked.
+.. note:: It is a very bad idea to call `init` more than once on a single field. Every call to `init` allocates new memory inside your Cap'n Proto message, and if you call it more than once, the previous memory is leaked.
 
 Primitive Types
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -117,6 +117,8 @@ You can assign straight to the variable with the corresponding Python type. For
     alice.name = 'Alice'
     alice.email = 'alice@example.com'
 
+.. note:: Text fields will behave differently depending on your version of Python. In Python 2.x, Text fields will expect and return a `bytes` string, while in Python 3.x, they will expect and return a `unicode` string. Data fields will always a return `bytes` string.
+
 Enums
 ~~~~~~~~~~~~~~
 
@@ -346,7 +348,7 @@ There are 2 ways to call RPC methods. First the more verbose `request` syntax::
     request.expression.literal = 123
     eval_promise = request.send()
 
-This creates a request for the method named 'evaluate', sets `expression.literal` in that calls parameters to 123, and then sends the request and returns a promise (all non-blocking).
+This creates a request for the method named 'evaluate', sets `expression.literal` in that call's parameters to 123, and then sends the request and returns a promise (all non-blocking).
 
 The shorter syntax for calling methods is::