И это всё МОЁ
Sander van Vugt:
For the RHEL 8 certification, I have written a RHCSA Cert Guide and I am working on a separate RHCE Cert Guide. The RHCSA Cert Guide is now available at the O ‘reilly learning platform and you can pre-order the RHCSA Cert Guide – Book (bundle).
че где:
http://www.pearsonitcertification.com/store/red-hat-rhcsa-8-cert-guide-9780135938133?ranMID=24808
https://www.oreilly.com/library/view/red-hat-rhcsa/9780135938058/