diff --git a/user_guide_src/source/database/queries.rst b/user_guide_src/source/database/queries.rst
index d4ffd16..f626f1e 100644
--- a/user_guide_src/source/database/queries.rst
+++ b/user_guide_src/source/database/queries.rst
@@ -165,7 +165,7 @@
 
 **$this->db->error();**
 
-If you need to get the last error that has occured, the error() method
+If you need to get the last error that has occurred, the error() method
 will return an array containing its code and message. Here's a quick
 example::
 
diff --git a/user_guide_src/source/database/transactions.rst b/user_guide_src/source/database/transactions.rst
index e25b8ed..cfd6a56 100644
--- a/user_guide_src/source/database/transactions.rst
+++ b/user_guide_src/source/database/transactions.rst
@@ -87,7 +87,7 @@
 	$this->db->query('AN SQL QUERY...');
 	$this->db->trans_complete();
 
-When transactions are disabled, your queries will be auto-commited, just as
+When transactions are disabled, your queries will be auto-committed, just as
 they are when running queries without transactions, practically ignoring
 any calls to ``trans_start()``, ``trans_complete()``, etc.
 
diff --git a/user_guide_src/source/general/common_functions.rst b/user_guide_src/source/general/common_functions.rst
index 6d6744c..3e3e422 100644
--- a/user_guide_src/source/general/common_functions.rst
+++ b/user_guide_src/source/general/common_functions.rst
@@ -101,7 +101,7 @@
 
 .. php:function:: set_status_header($code[, $text = ''])
 
-	:param	int	$code: HTTP Reponse status code
+	:param	int	$code: HTTP Response status code
 	:param	string	$text: A custom message to set with the status code
 	:rtype:	void
 
diff --git a/user_guide_src/source/helpers/date_helper.rst b/user_guide_src/source/helpers/date_helper.rst
index 600a075..6bc6c2b 100644
--- a/user_guide_src/source/helpers/date_helper.rst
+++ b/user_guide_src/source/helpers/date_helper.rst
@@ -31,7 +31,7 @@
 	:rtype:	int
 
 	Returns the current time as a UNIX timestamp, referenced either to your server's
-	local time or any PHP suported timezone, based on the "time reference" setting
+	local time or any PHP supported timezone, based on the "time reference" setting
 	in your config file. If you do not intend to set your master time reference to
 	any other PHP supported timezone (which you'll typically do if you run a site
 	that lets each user set their own timezone settings) there is no benefit to using
diff --git a/user_guide_src/source/helpers/string_helper.rst b/user_guide_src/source/helpers/string_helper.rst
index 5305255..a1fd7ee 100644
--- a/user_guide_src/source/helpers/string_helper.rst
+++ b/user_guide_src/source/helpers/string_helper.rst
@@ -186,7 +186,7 @@
 	:returns:	Reduced string
 	:rtype:	string
 
-	Reduces multiple instances of a particular character occuring directly
+	Reduces multiple instances of a particular character occurring directly
 	after each other. Example::
 
 		$string = "Fred, Bill,, Joe, Jimmy";
diff --git a/user_guide_src/source/installation/upgrade_300.rst b/user_guide_src/source/installation/upgrade_300.rst
index 0fc211f..5b2d394 100644
--- a/user_guide_src/source/installation/upgrade_300.rst
+++ b/user_guide_src/source/installation/upgrade_300.rst
@@ -111,7 +111,7 @@
 
   - Set your ``$config['sess_driver']`` value
 
-    It will default to 'files', unles you've previously used
+    It will default to 'files', unless you've previously used
     ``$config['sess_use_database']``, in which case it will be set to
     'database'.
 
diff --git a/user_guide_src/source/installation/upgrade_313.rst b/user_guide_src/source/installation/upgrade_313.rst
index 76dd159..13af775 100644
--- a/user_guide_src/source/installation/upgrade_313.rst
+++ b/user_guide_src/source/installation/upgrade_313.rst
@@ -35,7 +35,7 @@
 =======================================================
 
 The :doc:`Input Library <../libraries/input>` would optionally replace
-occurences of `\r\n`, `\r`, `\n` in input data with whatever the ``PHP_EOL``
+occurrences of `\r\n`, `\r`, `\n` in input data with whatever the ``PHP_EOL``
 value is on your system - if you've set ``$config['standardize_newlines']``
 to ``TRUE`` in your *application/config/config.php*.
 
diff --git a/user_guide_src/source/libraries/config.rst b/user_guide_src/source/libraries/config.rst
index a45cacd..fe2e0a9 100644
--- a/user_guide_src/source/libraries/config.rst
+++ b/user_guide_src/source/libraries/config.rst
@@ -211,7 +211,7 @@
 	.. php:method:: load([$file = ''[, $use_sections = FALSE[, $fail_gracefully = FALSE]]])
 
 		:param	string	$file: Configuration file name
-		:param	bool	$use_sections: Whether config values shoud be loaded into their own section (index of the main config array)
+		:param	bool	$use_sections: Whether config values should be loaded into their own section (index of the main config array)
 		:param	bool	$fail_gracefully: Whether to return FALSE or to display an error message
 		:returns:	TRUE on success, FALSE on failure
 		:rtype:	bool
diff --git a/user_guide_src/source/libraries/email.rst b/user_guide_src/source/libraries/email.rst
index 0b38737..1be6e2a 100644
--- a/user_guide_src/source/libraries/email.rst
+++ b/user_guide_src/source/libraries/email.rst
@@ -348,7 +348,7 @@
 
 			$this->email->attach('http://example.com/filename.pdf');
 
-		If you'd like to use a custom file name, you can use the third paramater::
+		If you'd like to use a custom file name, you can use the third parameter::
 
 			$this->email->attach('filename.pdf', 'attachment', 'report.pdf');
 
@@ -387,7 +387,7 @@
 		:rtype:	string
 
 		Returns a string containing any server messages, the email headers, and
-		the email messsage. Useful for debugging.
+		the email message. Useful for debugging.
 
 		You can optionally specify which parts of the message should be printed.
 		Valid options are: **headers**, **subject**, **body**.
diff --git a/user_guide_src/source/libraries/encryption.rst b/user_guide_src/source/libraries/encryption.rst
index 377e650..b16511d 100644
--- a/user_guide_src/source/libraries/encryption.rst
+++ b/user_guide_src/source/libraries/encryption.rst
@@ -382,7 +382,7 @@
 
   #. Check if the string is long enough, separate the HMAC out of
      it and validate if it is correct (this is done in a way that
-     prevents timing attacks agains it). Return FALSE if either of
+     prevents timing attacks against it). Return FALSE if either of
      the checks fails.
 
   #. Base64-decode the string.
diff --git a/user_guide_src/source/libraries/ftp.rst b/user_guide_src/source/libraries/ftp.rst
index ddd4442..2a01525 100644
--- a/user_guide_src/source/libraries/ftp.rst
+++ b/user_guide_src/source/libraries/ftp.rst
@@ -2,7 +2,7 @@
 FTP Class
 #########
 
-CodeIgniter's FTP Class permits files to be transfered to a remote
+CodeIgniter's FTP Class permits files to be transferred to a remote
 server. Remote files can also be moved, renamed, and deleted. The FTP
 class also includes a "mirroring" function that permits an entire local
 directory to be recreated remotely via FTP.
diff --git a/user_guide_src/source/libraries/input.rst b/user_guide_src/source/libraries/input.rst
index d9c6c2d..01099a9 100644
--- a/user_guide_src/source/libraries/input.rst
+++ b/user_guide_src/source/libraries/input.rst
@@ -167,7 +167,7 @@
 
 			$this->input->post(array('field1', 'field2'));
 
-		Same rule applied here, to retrive the parameters with XSS filtering enabled, set the
+		Same rule applied here, to retrieve the parameters with XSS filtering enabled, set the
 		second parameter to boolean TRUE.
 		::
 
@@ -200,7 +200,7 @@
 
 			$this->input->get(array('field1', 'field2'));
 
-		Same rule applied here, to retrive the parameters with XSS filtering enabled, set the
+		Same rule applied here, to retrieve the parameters with XSS filtering enabled, set the
 		second parameter to boolean TRUE.
 		::
 
diff --git a/user_guide_src/source/libraries/pagination.rst b/user_guide_src/source/libraries/pagination.rst
index 913717c..99b5a80 100644
--- a/user_guide_src/source/libraries/pagination.rst
+++ b/user_guide_src/source/libraries/pagination.rst
@@ -101,7 +101,7 @@
 
 If you have ``$config['enable_query_strings']`` set to TRUE your links
 will automatically be re-written using Query Strings. This option can
-also be explictly set. Using ``$config['page_query_string']`` set to TRUE,
+also be explicitly set. Using ``$config['page_query_string']`` set to TRUE,
 the pagination link will become::
 
 	http://example.com/index.php?c=test&m=page&per_page=20
diff --git a/user_guide_src/source/libraries/sessions.rst b/user_guide_src/source/libraries/sessions.rst
index a95cd5a..b1f658d 100644
--- a/user_guide_src/source/libraries/sessions.rst
+++ b/user_guide_src/source/libraries/sessions.rst
@@ -471,7 +471,7 @@
 
 .. note:: The 'cookie_httponly' setting doesn't have an effect on sessions.
 	Instead the HttpOnly parameter is always enabled, for security
-	reasons. Additionaly, the 'cookie_prefix' setting is completely
+	reasons. Additionally, the 'cookie_prefix' setting is completely
 	ignored.
 
 Session Drivers
diff --git a/user_guide_src/source/libraries/trackback.rst b/user_guide_src/source/libraries/trackback.rst
index bceb515..dc4477e 100644
--- a/user_guide_src/source/libraries/trackback.rst
+++ b/user_guide_src/source/libraries/trackback.rst
@@ -262,7 +262,7 @@
 		:returns:	Data value or empty string if not found
 		:rtype:	string
 
-		Returns a single item from the reponse data array.
+		Returns a single item from the response data array.
 
 	.. php:method:: process($url, $data)