Nodes of mine that I like to reference:

• Running external commands
• File::Temp examples
• Return values of regular expressions
• "open" Best Practices
• To glob or not to glob
• Building Regex Alternations Dynamically
• Parsing HTML/XML with Regular Expressions and Why a regex *really* isn't good enough for HTML and XML, even for "simple" tasks
• hash key autoquoting
• "alias"
• State machine examples
• Re: Curious about Perl's strengths in 2018 (a list of "modern" modules)
• Debugging Unicode issues
• Posting binary data on PerlMonks
• Equivalencies of use ...
• Links to threads about Unicode in Windows filenames
• Maximum values for integers
• How to Bisect Perl
• looks_like_number is (almost) the exact same function Perl uses for "not numeric" warnings
• Generate XML from Perl data structure (fairly generic)
• Data::Diver type code: here, here, here, here (see also Data::DPath, Data::Path, untested)
• Dump subs including closed over lexicals
• My Mojolicious posts:
  • a Login example (see also RFC / Audit: Mojo Login Example)
  • Mojo::IOLoop based TCP server and client
  • a Mojo::SQLite query example
  • Logging Serial Ports with Mojolicious
  • a simple example of Mojo::IOLoop::Subprocess
  • basic form submission
  • AJAX form submission (more of a jQuery example)
  • dynamic refresh of a page (more of a jQuery example)
  • url_for vs. url_with
  • a WebSocket multiplexer
  • a hackish HTML editor
  • Mojo::DOM::Role::TreeWalker
  • Quite a few Mojo::DOM examples