For an even-more-beginner's guide, see the slides to a session I teach to Econ postgrads once a year[1]. These introduces the metacharacters gradually, using a

For an even-more-beginner's guide, see the slides to a session I teach to Econ postgrads once a year[1]. These introduces the metacharacters gradually, using a task-based approach. We start by finding street addresses, per https://xkcd.com/208/ https://xkcd.com/208/. [1] http://mackerron.com/text/text-slides.pdf http://mackerron.com/text/text-slides.pdf (page 19 onwards) with supporting resources at http://mackerron.com/text/ http://mackerron.com/text/