Foundation · Linux
Learn the system.
Build confidence with Linux files, processes, networking, storage, security and troubleshooting.
- Open self-paced Linux learning
- 30-question completion assessment
- Optional certificate after passing
Gnu Group · Learning Academy
Learn freely. Prove what you learned. Certify only if you want to.
Gnu Group's self-paced learning stays open and free. Start with Linux foundations, then add Git & GitHub source control before automation, containers and orchestration. Certification remains a separate, optional pathway and is enabled for the validated Linux Fundamentals, FreeBSD Fundamentals, Git & GitHub Fundamentals, Ansible Fundamentals, Docker Fundamentals, Kubernetes Fundamentals, CI/CD Fundamentals, Terraform Fundamentals, Cloud Infrastructure Fundamentals, Observability Fundamentals, DevSecOps Fundamentals, Platform Engineering Fundamentals, SRE / Reliability Engineering Fundamentals, AI Engineering Fundamentals and RAG & Knowledge Systems Engineering programs.
Study Linux Free ↗Learn FreeBSDLearn Git & GitHubStart AnsibleLearn DockerLearn KubernetesLearn CI/CDLearn TerraformLearn Cloud InfrastructureLearn ObservabilityLearn DevSecOpsLearn Platform EngineeringLearn SRE / Reliability EngineeringLearn AI EngineeringLearn RAG & Knowledge SystemsBrowse Academy courses
New category · DevOps
Version. Automate. Package. Orchestrate. Deliver. Provision.
Start with Git & GitHub source control, continue to Ansible automation, Docker containers and Kubernetes orchestration, then connect the delivery flow with CI/CD, manage infrastructure changes as code with Terraform, and place those capabilities into production-shaped cloud architecture, then learn to observe and diagnose the running system, then integrate security evidence across the delivery path, then compose the capabilities into a self-service platform product, and finally operate those services with explicit reliability objectives, sustainable response and continuous improvement.
- Git & GitHub Fundamentals — course, assessment and optional certificate available
- Ansible Fundamentals — course, assessment and optional certificate available
- Docker Fundamentals — course, assessment and optional certificate available
- Kubernetes Fundamentals — course, assessment and optional certificate available
- CI/CD Fundamentals — course, assessment and optional certificate available
- Terraform Fundamentals — course, assessment and optional certificate available
- Cloud Infrastructure Fundamentals — course, assessment and optional certificate available
- Observability Fundamentals — course, assessment and optional certificate available
- DevSecOps Fundamentals — course, assessment and optional certificate available
- Platform Engineering Fundamentals — course, assessment and optional certificate available
- SRE / Reliability Engineering Fundamentals — course, assessment and optional certificate available
New category · AI
Engineer. Evaluate. Ground. Guard. Operate.
Build AI applications as production software systems: explicit contracts, local/hosted model decisions, RAG, tools, evals, security, observability and release evidence.
- AI Engineering Fundamentals — available
- RAG & Knowledge Systems Engineering — available · beginner-entry → engineer-exit
- Account-free core labs + downloadable lab pack
- Optional local Ollama practica
- Scenario-heavy assessment and optional certificate
Professional practice · Forensics
Investigate. Correlate. Defend.
Use the free GNU Legal reference for concepts, then work synthetic cases inside a persistent Academy investigation laboratory.
- Three launch investigation cases
- Guided, Analyst and Examiner modes
- Evidence notebook, timeline and hypothesis challenge
- Quality Gate: observation before attribution
DevOps progression
Understand why each layer exists.
The Academy introduces tools in dependency order rather than as disconnected products.
01Linux
Understand the operating system, processes, services and networking.
02Git & GitHub
Version changes, collaborate safely and create auditable release history.
03Ansible
Automate repeatable Linux administration consistently.
04Docker
Package, network, persist and operate applications with containers.
05Kubernetes
Deploy, expose, persist and troubleshoot containers across a cluster.
06CI/CD
Build, test, package, promote, verify and roll back releases.
07Terraform
Plan, review and apply infrastructure changes as code with protected state.
08Cloud Infrastructure
Connect identity, networking, compute, data, security, reliability and cost.
09Observability
Use metrics, logs and traces to diagnose running systems and connect telemetry to SLOs.
10DevSecOps
Integrate secrets, code, artifact, identity and policy controls into delivery with reproducible evidence.
11Platform Engineering
Compose catalog, golden paths, self-service, GitOps, policy and observability into a supported developer platform.
12SRE / Reliability Engineering
Connect user expectations to SLIs, SLOs, error budgets, alerting, incidents, resilience and continuous reliability improvement.
DevOps course
Git & GitHub Fundamentals
Twelve complete source-control lessons covering repository state, commits, history, branching, merging, remotes, GitHub authentication, pull requests, recovery, tags and a collaborative release capstone.
DevOps course
Ansible Fundamentals
Twelve complete beginner lessons with conceptual explanations, worked examples, guided labs, troubleshooting guidance, real-world context and knowledge checks.
DevOps course
Docker Fundamentals
Twelve complete container lessons covering lifecycle, images, Dockerfiles, networks, storage, Compose, security, troubleshooting and a multi-service capstone.
DevOps course
Kubernetes Fundamentals
Fourteen complete orchestration lessons covering architecture, Pods, Deployments, Services, configuration, resources, probes, storage, RBAC, security, troubleshooting and a multi-tier capstone.
DevOps course
Terraform Fundamentals
Twelve infrastructure-as-code lessons covering HCL, providers, variables, stable instance identity, state and locking, modules, refactoring, import, testing, security and a provider-free capstone.
Cloud course
Cloud Infrastructure Fundamentals
Twelve architecture lessons covering shared responsibility, IAM, VPC networking, compute, storage, load balancing, DNS/application delivery, managed databases, security, observability, cost controls and Terraform delivery.
DevOps · Operations course
Observability Fundamentals
Twelve production-aware lessons covering metrics, Prometheus, PromQL, Grafana, structured logs, OpenTelemetry, traces, correlation, alerting, SLOs and incident diagnosis.
DevOps · Platform course
Platform Engineering Fundamentals
Twelve product-minded lessons covering developer journeys, catalog and ownership, golden paths, self-service, Kubernetes/Helm abstractions, GitOps, policy, tenancy, scorecards and platform reliability.
DevOps · Reliability course
SRE / Reliability Engineering Fundamentals
Twelve production-minded lessons covering reliability risk, toil, SLIs, SLOs, error budgets, golden signals, burn-rate alerting, on-call, incidents, capacity, resilience, postmortems and continuous improvement.
AI Engineering course
AI Engineering Fundamentals
Twelve production-minded modules covering model/context engineering, structured outputs, retrieval/RAG, tools and agents, evals, security, observability, economics and release discipline.
Linux certificate pathway
Linux Fundamentals
GNU/Linux foundations, filesystems, users, processes, packages, storage, networking, shell automation, security and troubleshooting.