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diff --git a/pod/perlintro.pod b/pod/perlintro.pod
index 0d96c97..cb115ec 100644
--- a/pod/perlintro.pod
+++ b/pod/perlintro.pod
@@ -55,7 +55,7 @@ Alternatively, put this as the first line of your script:
 to be executable first, so C<chmod 755 script.pl> (under Unix).
 
 For more information, including instructions for other platforms such as
-Windows and MacOS, read L<perlrun>.
+Windows and Mac OS, read L<perlrun>.
 
 =head2 Basic syntax overview
 
@@ -169,7 +169,7 @@ The elements we're getting from the array start with a C<$> because
 we're getting just a single value out of the array -- you ask for a scalar, 
 you get a scalar.
 
-To get multiple values from a array:
+To get multiple values from an array:
 
     @animals[0,1];                  # gives ("camel", "llama");
     @animals[0..2];                 # gives ("camel", "llama", "owl");
@@ -351,7 +351,7 @@ Exactly like C:
     }
 
 The C style for loop is rarely needed in Perl since Perl provides
-the the more friendly list scanning C<foreach> loop.
+the more friendly list scanning C<foreach> loop.
 
 =item foreach
 
@@ -560,7 +560,7 @@ The results end up in C<$1>, C<$2> and so on.
 
     # a cheap and nasty way to break an email address up into parts
 
-    if ($email =~ /([^@])+@(.+)/) {
+    if ($email =~ /([^@]+)@(.+)/) {
         print "Username is $1\n";
         print "Hostname is $2\n";
     }
@@ -616,7 +616,7 @@ in using third-party modules, which are documented below.
 =head2 Using Perl modules
 
 Perl modules provide a range of features to help you avoid reinventing
-the wheel, and can be downloaded from CPAN (http://www.cpan.org).  A
+the wheel, and can be downloaded from CPAN ( http://www.cpan.org/ ).  A
 number of popular modules are included with the Perl distribution
 itself.