K8s Guide vs IT Playbook

K8s Guide is the complete way to learn Kubernetes - from your very first pod to Kubestronaut - and to pass all five Cloud Native certifications: CKA, CKAD, CKS, KCNA, and KCSA. Most Kubernetes apps are a static pile of flashcards. K8s Guide is built to make you actually understand Kubernetes, then prove it. LEARN IT - THE GUIDE A from-scratch path through Kubernetes, written for a phone screen instead of squeezed in from a website. 50 in-depth lessons across eight areas - Containers, Foundations, Workloads, Networking, Configuration, Security, Operations, and Ecosystem Tools - that build real understanding, absolute beginner to expert. • Starts before Kubernetes even begins: what a container is, how it differs from a VM, and why orchestration exists • Native diagrams drawn for mobile - traffic flows, control loops, and cluster architecture you can actually read on a phone, not pinch-to-zoom web images • Dense topics broken into clean tables, key-point lists, and step-by-step sequences instead of walls of text • Ecosystem Tools coverage beyond core Kubernetes - Argo CD, Istio, Prometheus, Cilium, Helm, Kustomize, cert-manager, OPA Gatekeeper, Kyverno, Falco, Trivy, and KEDA • Every concept explained in plain language, so it sticks PROVE IT - CERTIFICATION PREP All five CNCF certifications, fully built out, with 600+ practice questions and 160+ certification lessons across 30 exam domains. • Every quiz mixes multiple-choice with hands-on build tasks - fill in real YAML, assemble a kubectl command, order the steps, spot the bug - shuffled in like the real exam, not a separate mode • An adaptive quiz engine weights questions toward whatever you're getting wrong, so weak areas resurface instead of drilling what you already know • Study mode for instant feedback and explanations, or Test mode for a full exam simulation with results at the end • A mastery score per certification blends quiz accuracy with lesson coverage into a single readiness number - so you always know what to study next, and when you're actually ready EVERYTHING INCLUDED • The full Guide plus all five certification tracks - CKA, CKAD, CKS, KCNA, KCSA • Hands-on build questions mixed into every quiz, alongside multiple choice • Look Up - a fast reference search to find any concept, command, or term in seconds • Native, mobile-first diagrams throughout • Adaptive quizzing with per-certification readiness and weak-domain call-outs • A built-in Blog with the latest Kubernetes articles and release notes • Bookmark any lesson or question for later, synced across your devices • Home Screen widgets for your streak, active certification, and a rotating Kubernetes tidbit • Optional local study reminders on your own schedule • Kubestronaut badge tracking via your public Credly profile (entirely optional) • iCloud sync for progress, quiz history, and bookmarks - in your own private iCloud, not a server we run BUILT DIFFERENTLY, ON PURPOSE No account. No login. No data collection of any kind - your study data lives in your own iCloud and nowhere else. No ads, no paywalls, no subscriptions; every lesson and question is free. (There's an optional tip jar if you'd like to support development - but nothing is ever locked.) Kubernetes itself is open source, built on the idea that knowledge should be open to everyone. This app is built on the same idea. Whether you're chasing your first certification or going for the full Kubestronaut set, K8s Guide is built to get you there.

What actually happens when you type git push? Why does Kubernetes bring a container back after you kill it? How does a database find one row among millions in a blink? IT Playbook answers questions like these in 31 courses, from your first line of Python to Linux, Docker and Kubernetes, the cloud, networking, security and AI. Each one is written like a good book: one idea at a time, in plain words, nothing skipped. READ IT, OR JUST LISTEN Every lesson is read aloud in a natural voice, sentence by sentence, and the sentence you are hearing lights up on the page. Follow along, or switch on Play in background, put the phone in your pocket and keep learning on a walk, in the car or at the gym: the narration keeps going with the screen off. DON'T JUST READ ABOUT IT. PLAY WITH IT. 344 diagrams in the courses are alive. Kill a pod and watch Kubernetes bring it back. Break one step of a CI pipeline and see where everything stops. Drop numbers into a search tree, let an algorithm find the shortest route, watch scattered points sort themselves into groups. Tap, change a value, and see what happens. Things that take a page to explain click in ten seconds when you can poke them yourself. FLASHCARDS, HANDS-FREE Every course comes with its own flashcards, built from its glossary: almost 7,000 terms in all. Switch on Hands-free and the trainer runs by voice. It reads a definition, you say the term out loud, it tells you whether you got it and moves on. No tapping, no looking at the screen. Do a round while you cook or walk the dog, and the words simply stay with you. A smart schedule brings each card back right before you would forget it. ALSO INSIDE - One beginner course free every month, in full, for anyone with a free account. No credit card needed. - On top of that, the first chapter of all 31 courses is free, so you can try any topic before you decide. - A short quiz after every lesson, with an explanation for every answer, the wrong ones too. - Two voices, the speed you like, and a pause between sentences you can stretch while an idea sinks in. - Whole courses saved for offline, so a flight or a tunnel is no reason to stop. - A daily streak that counts reading and flashcards, because you need both. - Courses re-checked against the official documentation on a regular schedule, so what you learn is still true today. FREE, AND PAID Chapter one of every course is free, and so is every chapter overview and one beginner course each month, in full. An All Courses subscription opens everything: $16.00 a month, or $119.99 a year. Half price for the first year: $8.00 a month for the first twelve months, or $60.00 for the first year. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and it can be managed or cancelled in your Apple Account settings at any time. ONE ACCOUNT EVERYWHERE Your progress, your streak and your flashcard schedule follow you between the iPhone, the iPad, the Mac and the website, because they are the same account and the same data. Start a lesson on a laptop, finish it on a bus. Sign in with Apple or with Google. Delete the account, and everything with it, from Settings whenever you want. Terms of Use: https://itplaybook.org/portal/academy/terms.html Privacy Policy: https://itplaybook.org/portal/academy/privacy.html