diff --git a/README.md b/README.md
index e6efbd1..5d0195b 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ For development setup, see the [the Development guide](./DEVELOPMENT.md)
 
 ## Specifications and validations
 
-Specifications can be defined in 3 basic Python primary types (``BoolSpec``, ``IntSpec`` and ``StringSpec``), along with dictionaryies to organise them (``DictSpec``). The ``ConfigSpecification`` is just a special type of ``DictSpec`` used to indicate the root of the config.
+Specifications can be defined in 3 basic Python primary types (``BoolSpec``, ``IntSpec`` and ``StringSpec``), along with dictionaries to organise them (``DictSpec``). The ``ConfigSpecification`` is just a special type of ``DictSpec`` used to indicate the root of the config.
 
 All of the specification types also have a list variant (``BoolListSpec``, ``IntListSpec``, ``StringListSpec``, ``DictListSpec``).
 
diff --git a/configspec/manager.py b/configspec/manager.py
index 4e00706..10e73e3 100644
--- a/configspec/manager.py
+++ b/configspec/manager.py
@@ -194,7 +194,7 @@ class ConfigManager():
         Args:
             bundle_names: A list of config bundle names to get. If dictionary is supplied, uses
                 the values as ConfigSpecifications rather than looking up the ones stored in the
-                ConfigManager.
+                ConfigManager. If None, will use all bundle names in the config source.
 
         Returns:
             dict: A dict of the config bundles, with keys matching those passed in
@@ -242,7 +242,8 @@ class ConfigManager():
         ConfigManager (see ``validate_bundle()``).
 
         Args:
-            bundle_names: A list of config bundle names to get.
+            bundle_names: A list of config bundle names to get. If None, will use all bundle
+                names in the config source.
 
         Returns:
             dict: A dict of the validated config bundles, with keys matching those passed in
@@ -265,6 +266,10 @@ class ConfigManager():
     def get_bundle_names(self):
         """
         Returns a list of config bundle names contained in the source.
+
+        Note that this may include bundles that have not been verified yet. Calling
+        `validate_bundles()` or `get_config_bundles()` first will make sure all config source
+        bundles are verified.
         """
         return list(self.config_source.keys())