Addressed more tech review comments.

Author: chromatic

sections/expressivity.pod

@@ -64,14 +64,19 @@ will understand and adopt more powerful idioms and techniques. It's okay for
 you to write simple code that you understand. Keep practicing and you'll become
 a native speaker.
 
-An experienced Perl hacker might triple a list of numbers with:
+A novice Perl hacker might triple a list of numbers with:
 
 =begin programlisting
 
-    my @tripled = map { $_ * 3 } @numbers;
+    my @tripled;
+
+    for (my $i = 0; $i < scalar @numbers; $i++) {
+        $tripled[$i] = $numbers[$i] * 3;
+    }
 
 =end programlisting
 
+
 ... and a Perl adept might write:
 
 =begin programlisting
@@ -84,15 +89,11 @@ An experienced Perl hacker might triple a list of numbers with:
 
 =end programlisting
 
-... while a novice might try:
+... while an experienced Perl hacker could write:
 
 =begin programlisting
 
-    my @tripled;
-
-    for (my $i = 0; $i < scalar @numbers; $i++) {
-        $tripled[$i] = $numbers[$i] * 3;
-    }
+    my @tripled = map { $_ * 3 } @numbers;
 
 =end programlisting
 

sections/next_steps.pod

@@ -26,7 +26,7 @@ The CPAN has plenty of other gems, though. For example, if you want to:
 
 =item * I<Use a powerful web framework>, use C<Mojolicious>, C<Dancer>, or C<Catalyst>
 
-=item * I<Process structured data files>, use C<Text::CSV>
+=item * I<Process structured data files>, use C<Text::CSV_XS> (or C<Text::CSV>)
 
 =item * I<Manage module installations for applications>, use C<Carton>
 

sections/perldoc.pod

@@ -88,7 +88,7 @@ process id. Depending on your shell, you may have to quote the variable
 appropriately.
 
 The C<-l> option shows the I<path> to the file containing the documentation. (A
-module may have a separate F<.pod> file in addition to its F<.pm> file.>)
+module may have a separate F<.pod> file in addition to its F<.pm> file.)
 
 The C<-m> option displays the entire I<contents> of the module, code and all,
 without any special formatting.

sections/regular_expressions.pod

@@ -433,12 +433,17 @@ The C<\d> metacharacter matches Unicode digits:
 
 =begin programlisting
 
-    # use Regexp::English for a robust phone number regex
     next unless $number =~ /B<\d>{3}-B<\d>{3}-B<\d>{4}/;
     say "I have your number: $number";
 
 =end programlisting
 
+C<Regexp::English>
+C<CPAN; C<Regexp::English>>
+
+... though in this case, the C<Regexp::English> module has a much better phone
+number regex already written for you.
+
 X<regex; C<\s>>
 X<C<\s>; whitespace regex metacharacter>
 X<regex; whitespace>