Learn Security-Enhanced Linux
Don't disable it, it can stop privilege escalation in its tracks!
Who is this course for?
Software developers (and security engineers) that have been tasked with defending a system or just for people simply wanting to learn what to do with SELinux other than disabling it!
What can I expect when I complete it?
You'll be able to design, debug, package and test an SELinux policy.
What does it cost?
It's free (other than your time), though if you do use it I'm hoping you'll report bugs or confusing parts so you can pay it forward ;)