Complete entry-level prep for the CNCF Kubernetes and Cloud Native Associate (KCNA) exam across all five domains — Kubernetes fundamentals (architecture and core API resources), container orchestration (runtimes, CNI/CSI/CRI, security), cloud native architecture (microservices, autoscaling, serverless, CNCF), cloud native observability (logs/metrics/traces, Prometheus), and cloud native application delivery (CI/CD, GitOps, Helm). Concept tables, exam-trap callouts, per-module knowledge checks, domain mastery checks, a full-length mock exam, and a spaced-repetition flashcard deck. The foundational on-ramp to the CKA.