This document contains summaries of several Red Hat certification and technical courses: - Red Hat Server Hardening teaches how to secure Red Hat Enterprise Linux systems to comply with security policies, addressing concerns like user authentication, system updates, auditing and logging, and file system integrity. - Red Hat Storage Server Administration teaches how to install, configure, and maintain clusters of Red Hat Storage servers and explore storage technologies like NFS, CIFS, unified file and object storage, and geo-replication. - Red Hat Enterprise Clustering and Storage Management teaches storage management, Red Hat High Availability technologies, and shared storage with GFS2 and Red Hat Storage Server through hands-on labs.