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diff --git a/pod/perlintro.pod b/pod/perlintro.pod
index 201ebea..9973fd6 100644
--- a/pod/perlintro.pod
+++ b/pod/perlintro.pod
@@ -63,7 +63,7 @@ Windows and Mac OS, read L<perlrun>.
 =head2 Safety net
 
 Perl by default is very forgiving. In order to make it more robust
-it is recommened to start every program with the following lines:
+it is recommended to start every program with the following lines:
 
     #!/usr/bin/perl
     use strict;
@@ -302,7 +302,7 @@ are defined.
 Using C<my> in combination with a C<use strict;> at the top of
 your Perl scripts means that the interpreter will pick up certain common
 programming errors.  For instance, in the example above, the final
-C<print $b> would cause a compile-time error and prevent you from
+C<print $y> would cause a compile-time error and prevent you from
 running the program.  Using C<strict> is highly recommended.
 
 =head2 Conditional and looping constructs
@@ -369,7 +369,7 @@ You can also use C<while> in a post-condition:
 
 Exactly like C:
 
-    for ($i=0; $i <= $max; $i++) {
+    for ($i = 0; $i <= $max; $i++) {
         ...
     }
 
@@ -537,7 +537,7 @@ expressions.  These are documented at great length in L<perlre>, but for
 the meantime, here's a quick cheat sheet:
 
     .                   a single character
-    \s                  a whitespace character (space, tab, newline)
+    \s                  a whitespace character (space, tab, newline, ...)
     \S                  non-whitespace character
     \d                  a digit (0-9)
     \D                  a non-digit
@@ -659,7 +659,7 @@ to database integration to graphics.  A categorized list of modules is
 also available from CPAN.
 
 To learn how to install modules you download from CPAN, read
-L<perlmodinstall>
+L<perlmodinstall>.
 
 To learn how to use a particular module, use C<perldoc I<Module::Name>>.
 Typically you will want to C<use I<Module::Name>>, which will then give