The path is
/var/www/wordpress
From my understanding, that was the correct place to extract the files. I don’t what you mean by PDP–might you mean PHP? In any case, I’m not sure how to check whether it’s running. If I click on the link to the index.php file, I get a message from Firefox asking whether I want to run or save the file. From my understanding, when things are working correctly it should take me directly to that page in my browser, correct?
