Free DevOps Courses
DevOps here is best learned in order, because each course assumes the one before it. Start with freeCodeCamp's two-hour Docker course: containers are the foundation everything else in this space sits on, and it's the fastest way to get the core idea. Once containers make sense, freeCodeCamp's Kubernetes tutorial covers orchestration, running many containers reliably across machines, which only clicks after Docker does. Save Microsoft's AZ-400 (Development for Enterprise DevOps) for last, and reach for it specifically if you're chasing the Azure DevOps certification, since it's built around that exam. One steer: DevOps pairs with the cloud track (AWS, Azure) rather than replacing it, so if certs are your aim, work the cloud courses alongside these.
Related Learning Paths
1 free DevOps course include a certificate
See all free coding courses with certificates →freeCodeCamp's 2-hour Docker course covering containers, images, volumes, networks, Docker Compose, and writing Dockerfiles. Practical and project-driven — by the end you can containerise real applications. Free on YouTube.
freeCodeCamp's full Kubernetes course covering pods, deployments, services, ingress, ConfigMaps, secrets, and Helm. Builds on a basic Docker foundation. Free and project-based.