I am wondering what primers/guides/tutorials/etc. are out there for learning to rewrite URLs using Apache/.htaccess? Where is a good place to start?
My primary interest is learning how to point certain directories to others, and how to use portions of a URL as parameters to a script (i.e. "/some/subdirs/like/this" => "script.php?a=some&b=subdirs&c=like&d=this").