Question: first things to do after installing fedora 31?
Answer: Update your Installation Packages. Its always good to immediately update your installation. ... 
Configure IP Address. We prefer to set a static IP address, but you could leave it on DHCP. ... 
Configure Hostname. ... 
Enable usefull repositories. ... 
Install Chrome. ... 
Install the following apps. ... 
Enable SSH. ... 
Install httpd and PHP7x with MariaDB.