Did you log in to the admin and created a publication.
You need to create a publication, set the publication alias to localhost and then add issue, sections, and publish them before you can see something on the homepage.
If you want to test campsite, you can always download one of the sample template packages and install it.
OK. I have downloaded the template and installed them.
But I can not log in admin page after entering http://localhost/admin.
Nothing is displayed on the screen.
err_log shows;
File does not exist.
/usr/local/campsite/www/campsite/html/favicon.ico.