The page you give is old ? because at this time, on Fedora, we are using "systemctl" to enable and start services.
This is a better way:
sudo yum install httpd
sudo systemctl start httpd
Check with
sudo systemctl status httpd
Then, you can configure your settings and use
sudo systemctl restart httpd
Then check if http port is open, at first try to shutdown firewall with
sudo systemctl firewalld stop
If it's ok, relaunch firewall (systemctl firewalld start) and use "firewall-config" tool to open http port in external and internal zones