15 articles tagged with Beginner.
Embeddings turn text into numbers a computer can compare. Here's the working mental model, a runnable Python example, and where embeddings fit in real apps.
Provision real cloud resources with Terraform — a VPC, an S3 bucket, and an EC2 instance — using the standard init/plan/apply workflow.
Generate an SSH key, set up passwordless login, and configure aliases for the servers you use daily — all without copy-pasting yet another long command.
A hands-on intro to prompt engineering. Learn the four levers (role, format, examples, constraints) and watch a vague prompt turn into a reliable one.
A clear walkthrough of Linux file permissions. Read the funny rwx- letters, change them safely with chmod, fix "permission denied" errors with confidence.
Run your first three Kubernetes objects — Pod, Deployment, Service — on a local cluster, then understand why each one exists and how they fit together.
GitOps in plain words — what it actually is, the workflow it enables, and a hands-on demo using Argo CD on a local Kubernetes cluster.
Walk through a working GitHub Actions workflow — install, test, build, deploy — for a tiny Node app. Every line explained.
Walk through your first Dockerfile, container run, and image push in 30 minutes. No theory dumps — just the commands and what each one is doing.
A working retrieval-augmented generation app you can run today. Markdown ingestion, embeddings, semantic search, and an LLM answer — start to finish in one afternoon.
Build a real disk-cleanup script step by step. Learn variables, conditionals, loops, error handling, and the safety preamble that prevents foot-guns.
A working mental model for AWS VPCs — what each piece does, how they connect, and why "VPC" is the wrong mental model if you came from physical networks.
