you will need to create an account for red hat and give them your information, nothing is free.
Download the no cost version you would like, if you are installing on a VM or Bare metal make sure to get the DVD ISO.
Reference: https://developers.redhat.com/products/rhel/download
Follow the steps to install and you are done, now register your OS to receive patches, pathing doesn't break things...
Register your OS
subscription-manager register --username <username> --password <password> --auto-attach
reference: https://access.redhat.com/solutions/253273
