diff --git a/README.markdown b/README.markdown
index 383f5f87b..eed0c068a 100644
--- a/README.markdown
+++ b/README.markdown
@@ -144,7 +144,7 @@ cd lua-resty-core
 sudo make install LUA_LIB_DIR=/opt/nginx/lualib
 ```
 
-After that, you need to add the above directory to the LuaJIT search direcotries with `lua_package_path` nginx directive in the http context and stream context.
+After that, you need to add the above directory to the LuaJIT search directories with `lua_package_path` nginx directive in the http context and stream context.
 
 ```
 lua_package_path "/opt/nginx/lualib/?.lua;;";
diff --git a/lib/ngx/base64.md b/lib/ngx/base64.md
index 0005cc2c9..d714772e7 100644
--- a/lib/ngx/base64.md
+++ b/lib/ngx/base64.md
@@ -66,7 +66,7 @@ decode\_base64url
 
 Decode `input` using base64url rules. Returns the decoded string.
 
-If the `input` is not a valid base64url encoded string, `decoded `will be `nil`
+If the `input` is not a valid base64url encoded string, `decoded` will be `nil`
 and `err` will be a string describing the error.
 
 [Back to TOC](#table-of-contents)
diff --git a/lib/ngx/pipe.md b/lib/ngx/pipe.md
index 43569cb5d..96f7146c7 100644
--- a/lib/ngx/pipe.md
+++ b/lib/ngx/pipe.md
@@ -150,7 +150,7 @@ Some more examples:
 ```lua
 local proc, err = ngx_pipe.spawn({"ls", "-l"})
 
-local proc, err = ngx_pipe.spawn({"perl", "-e", "print 'hello, wolrd'"})
+local proc, err = ngx_pipe.spawn({"perl", "-e", "print 'hello, world'"})
 ```
 
 If `args` is specified as a string, it will be executed by the operating system
diff --git a/lib/ngx/req.md b/lib/ngx/req.md
index 47e00461f..1786bda91 100644
--- a/lib/ngx/req.md
+++ b/lib/ngx/req.md
@@ -65,7 +65,7 @@ This method adds the specified header and its value to the current
 request. It works similarly as
 [ngx.req.set_header](https://github.com/openresty/lua-nginx-module#ngxreqset_header),
 with the exception that when the header already exists, the specified value(s)
-will be appended instead of overriden.
+will be appended instead of overridden.
 
 The first argument `header_name` must be a non-empty string.
 
diff --git a/lib/ngx/resp.md b/lib/ngx/resp.md
index 0e09deb55..9c77977f3 100644
--- a/lib/ngx/resp.md
+++ b/lib/ngx/resp.md
@@ -40,7 +40,7 @@ ngx_resp.add_header("Foo", "baz")
 
 
 ngx_resp.set(531, "user defined error")
---> the response line will be: 531 user defiend error
+--> the response line will be: 531 user defined error
 ```
 
 [Back to TOC](#table-of-contents)
diff --git a/lib/ngx/ssl.md b/lib/ngx/ssl.md
index e50ea5ea4..2c7453b30 100644
--- a/lib/ngx/ssl.md
+++ b/lib/ngx/ssl.md
@@ -225,7 +225,7 @@ set_der_priv_key
 
 **context:** *ssl_certificate_by_lua**
 
-Sets the DER-formatted prviate key for the current SSL connection.
+Sets the DER-formatted private key for the current SSL connection.
 
 Returns `true` on success, or a `nil` value and a string describing the error otherwise.
 
@@ -502,7 +502,7 @@ parse_pem_cert
 
 **context:** *any*
 
-Converts the PEM-formated SSL certificate chain data into an opaque cdata pointer (for later uses
+Converts the PEM-formatted SSL certificate chain data into an opaque cdata pointer (for later uses
 in the [set_cert](#set_cert)
 function, for example).
 
@@ -541,7 +541,7 @@ parse_der_cert
 
 **context:** *any*
 
-Converts the DER-formated SSL certificate chain data into an opaque cdata pointer (for later uses
+Converts the DER-formatted SSL certificate chain data into an opaque cdata pointer (for later uses
 in the [set_cert](#set_cert)
 function, for example).
 
diff --git a/lib/ngx/ssl/clienthello.md b/lib/ngx/ssl/clienthello.md
index 51cd30346..18a023a03 100644
--- a/lib/ngx/ssl/clienthello.md
+++ b/lib/ngx/ssl/clienthello.md
@@ -99,7 +99,7 @@ get_client_hello_server_name
 
 Returns the TLS SNI (Server Name Indication) name set by the client.
 
-Return `nil` when then the extension does not exist.
+Return `nil` when the extension does not exist.
 
 In case of errors, it returns `nil` and a string describing the error.
 
@@ -117,7 +117,7 @@ get_supported_versions
 
 Returns the table of ssl hello supported versions set by the client.
 
-Return `nil` when then the extension does not exist.
+Return `nil` when the extension does not exist.
 
 In case of errors, it returns `nil` and a string describing the error.
 
diff --git a/lib/ngx/ssl/proxysslcert.md b/lib/ngx/ssl/proxysslcert.md
index fbf9763ee..4f122f650 100644
--- a/lib/ngx/ssl/proxysslcert.md
+++ b/lib/ngx/ssl/proxysslcert.md
@@ -209,7 +209,7 @@ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 
 [Back to TOC](#table-of-contents)
 
-See AlsoCopyright
+See Also
 ========
 * the ngx_lua module: https://github.com/openresty/lua-nginx-module
 * the [proxy_ssl_certificate_by_lua*](https://github.com/openresty/lua-nginx-module/#proxy_ssl_certificate_by_lua_block) directive.
diff --git a/lib/ngx/ssl/proxysslverify.md b/lib/ngx/ssl/proxysslverify.md
index b78de8c74..e02790ff1 100644
--- a/lib/ngx/ssl/proxysslverify.md
+++ b/lib/ngx/ssl/proxysslverify.md
@@ -178,7 +178,7 @@ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 
 [Back to TOC](#table-of-contents)
 
-See AlsoCopyright
+See Also
 ========
 * the ngx_lua module: https://github.com/openresty/lua-nginx-module
 * the [proxy_ssl_verify_by_lua*](https://github.com/openresty/lua-nginx-module/#proxy_ssl_verify_by_lua_block) directive.