Run the following commands from the lamp command line:
cd ~ mkdir public_html chmod 755 public_html
If you try to access http://lamp.cse.fau.edu/~username you will get a forbidden message. You still need to create your first html web page file. From the command line run:
echo "Hello World" >> ~/public_html/index.html
By default the web server will look for a file named index.html or index.php in public_html. If any of those files exist it will open and display the contents. Files that end with .php will be parsed for PHP code, please see http://www.php.net for more details.
Put your html or php files in public_html. You will be able to access the website by visiting http://lamp.cse.fau.edu/~username