Tim Warner

My latest Pluralsight course is ready for your study and practice! SC-100: Designing Security Operations, Identity, and Compliance Capabilities www.pluralsight.com/courses/sc-1...

As much as I enjoy the new, non-“Classic” ChatGPT desktop app for Windows, some of its UX decisions are baffling. Software updates shouldn’t require a Myst-style pixel scrape to figure out what that tiny blue icon means or where I’m supposed to go next. Discoverability is part of usability.

Hello there! My latest Pluralsight course is fresh out of the oven! Certified Kubernetes Administrator (CKA): Securing Access with RBAC and Admission Controls www.pluralsight.com/courses/cka-...

I've taught tech since 1997. The job isn't knowing everything. It's knowing enough to serve the learner, knowing where your map ends, and never bluffing. Storytime: WINS, Kubernetes, rebuilding a course, and choosing learners over ego. youtu.be/LQpjSgUXQrc

Anthropic's Claude Certified Architect exam guide names all six scenarios outright, and your form draws four at random. That changes how you study. Candid CCAR-F review, NDA friendly throughout: youtu.be/n-Jse3TE3MI

If you're a Certified Kubernetes Administrator (CKA) candidate, you might be interested in my latest Pluralsight course, CKA: Managing Cluster Lifecycle and Upgrades. www.pluralsight.com/courses/cka-...

My latest Pluralsight course is fresh out of the oven! Certified Kubernetes Administrator (CKA): Installing Clusters with kubeadm www.pluralsight.com/courses/cka-...

Hey! My first Pluralsight course in an 11-course skill path on the Certified Kubernetes Administrator (CKA) certification is now live! Enjoy, and please let me know what you think. Certified Kubernetes Administrator (CKA): Kubernetes Foundations: www.pluralsight.com/courses/cka-...

AI-901 beta review is live. Microsoft rebuilt Azure AI Fundamentals from the ground up: five domains collapsed to two, classical ML is gone, and Python SDK code is now on a fundamentals exam. First time I've ever seen that. Full breakdown and prep guidance: youtu.be/LpFzaPkHCqc

Sat the AI-103 beta last night. Microsoft's new Azure AI Apps and Agents Developer Associate cert — replacing AI-102 on June 30, 2026. Code-first. Foundry-centric. Different animal than AI-102. My NDA-compliant debrief: youtu.be/Z2CUkcxXzLQ

Hi! Check out my latest Pluralsight course, "GH-500 Exam Strategy and Prep." This is the capstone course to my GitHub Advanced Security skill path. www.pluralsight.com/courses/gh50...

Check out my latest @pluralsight.bsky.social release! It's a discussion with fellow PS author Wes Higbee on thoughtful IT automation practices: www.pluralsight.com/courses/thou...

My new Pluralsight course Administer GHAS in GitHub Enterprise Cloud (GH-500) is published and ready for your cert-study enjoyment! www.pluralsight.com/courses/gh50...

Ready to study? My latest Pluralsight course is published! Automate Security Compliance with GitHub Advanced Security (GH-500) www.pluralsight.com/courses/gh50...

What are you waiting for? Go check out my latest Pluralsight course, Implement Code Scanning and CodeQL (GH-500)! www.pluralsight.com/courses/gh50...

My new Pluralsight course published! Prevent Secret Exposure with Secret Scanning (GH-500): www.pluralsight.com/courses/gh50...

I built an AZ-104 Cert Buddy in VS Code + GitHub Copilot: agents + skills that generate exam-real practice questions, grade answers with doc-grounded explanations, and create labs you can validate in your Azure subscription. Video: youtu.be/9RZWTgNTy90 Repo: github.com/timothywarne...

Just retook AZ-104 fresh after letting it expire. Candid take: 🔥 Hardest Microsoft cert exam, period 🧠 It's a data synthesis test disguised as a technical exam 📦 Azure Storage gets HEAVY coverage 🚫 Stop worrying about perf-based labs and subnetting Full NDA-friendly breakdown: youtu.be/AjFPRg0QTac

My GH-100 (GitHub Administration) exam review is up. Real-world admin skills (SSO/SCIM, RBAC, audit logs), plus a few “why is this question written like that” moments. Study guide: learn.microsoft.com/en-us/creden... Video: youtu.be/N8HrQGWBhjM

Yo! I built a PowerShell utility for parallel Claude Code sessions via git worktrees. Start-ClaudeWorktree: one command to spin up a sibling worktree + new terminal tab with Claude running. Stop-ClaudeWorktree: merge back, nuke the worktree, done. Gist: gist.github.com/timothywarne...

Hey there! If you're studying for the GH-500 GitHub Advanced Security (GHAS) certification, check out my latest Pluralsight course, Enhance Software Supply Chain Security with Dependency Review (GH-500)! www.pluralsight.com/courses/gh50...

I realized I was using "token" sloppily. Not wrong exactly, just imprecise. This quick video separates tokens, identifiers, and symbols by layer: 📝 Text → Tokens (lexing) 🌳 Tokens → Structure (parsing) 🔗 Names → Symbols (binding) ⚡ Symbols → Values (runtime) youtu.be/bsB3BS2hC6Q

Multi-cursor editing in VS Code is genuinely life-changing once it clicks 🎯 Alt+Click for surgical placement ⚡ Ctrl+D grabs matching tokens one by one 🔥 Ctrl+Shift+L selects ALL occurrences 🔧 Toggle modifier key to Ctrl if Alt feels wrong 8 min tutorial: youtu.be/7NgU_FTnGJ0

TIL after years of using Git: git archive Creates clean zip snapshots of your repo without: 🚫 node_modules 🚫 virtual environments 🚫 .git metadata My 180MB folder → 14MB. Perfect for uploading codebases to ChatGPT/Claude. youtu.be/WaZkdLRZubM

New video: Getting Gemini Code Assist running in VS Code Google's copying everyone else's patterns and honestly? That's great for us. Learn it once, use it everywhere. Fair warning: run multiple AI assistants and they WILL fight like puppies in a bag. youtu.be/rGPfi4Q9Rj8

Claude Cowork just saved me hours of scutwork: 🔹 Bulk social posts from 20 YT videos → Buffer CSV 🔹 9-year-old conference repo → 2026 presentation 🔹 Folder-based, not chat-based This is what real AI automation looks like. youtu.be/vz6y5BaUQsc

Hey! We shipped my new Pluralsight course: CircleCI Advanced Configuration. Advanced workflows, config reuse, parameters, Orbs, and sane pipeline architecture for grown-up CI/CD. No fluff. No copy-paste YAML debt. 🔗 www.pluralsight.com/courses/circ...

Stop mousing around in VS Code. The Command Palette has hidden prefix modes: @ → symbols in current file # → symbols across your whole project : → jump to any line ? → shows all the options Quick win: Remove the > caret with backspace for instant file search. youtu.be/fZnS4DA9egU

GitHub killed Knowledge Bases. Spaces are the replacement. Getting them working in VS Code? That was a journey. 🔧 HTTP transport, not Docker stdio 🔑 X-MCP-Toolsets: default,copilot_spaces ⚠️ Only 2 tools right now, but watch for updates Full walkthrough: youtu.be/4luVUa-pS-c

Finally got BYOK working with GitHub Copilot! 🔹 Deploy your model in Azure AI Foundry 🔹 Register API key in GitHub Enterprise 🔹 Pick it from VS Code's model selector 🔹 Fine-tuning + agentic features unlocked Stock models are fine. YOUR models are better. youtu.be/gndyFfyp2J0

Code to Cloud: 2026 Certification Secrets Kevin and I discuss what we think are the most important IT certifications of the new year. Enjoy! www.youtube.com/watch?v=ZfjX...

Your wall-of-text AI prompts are holding you back. 🔹 XML-style tags give LLMs clear boundaries 🔹 All 3 major vendors recommend it 🔹 No valid XML needed -- intent matters Quick demo + Claude Skills automation: youtu.be/TBeZmQiZR5k

Just dropped a new video breaking down Copilot Studio agent creation from scratch. 🎯 Plain English → working AI agent 📚 Add your own knowledge sources 🧪 Test in real-time before publishing 🚀 Live demo site in seconds No code required. Easier than it looks. youtu.be/tTj__zkK0dQ

The chat UI lies to you about how LLMs actually work. 📍 START = hot zone (high recall) 📍 MIDDLE = risk zone (gets missed) 📍 END = hot zone (immediate attention) Structure beats sprawl. Position beats length. New lesson—12 min, no fluff: youtu.be/oOL0WY1b_x4

New video: How to create an agent in M365 Copilot The catch? These aren't really "agents"—they're custom GPTs. Still useful for internal team scenarios, just know the limits. I walk through building an RAI Coach from scratch, no code required. youtu.be/Wn5UaH2YkqI

New video: Subagents in Claude Code 🔧 Spawn parallel AI instances with isolated context ⌨️ Ctrl+B to background agents while you work 📁 Project or user-level storage for reuse 📊 /context shows your token breakdown Real walkthrough, real debugging, real learning. Enjoy! youtu.be/dk0kn2evY38

I'm teaching context engineering, so I built a demo. Simple MCP server (~400 lines TypeScript): • Store notes locally • Search by relevance • Compress to fit a character budget Run it in VS Code with Copilot. Clone it, break it, learn from it. 🔗 github.com/timothywarner-org/copilot-memory-store

CircleCI is an opinionated SaaS CI/CD platform that works hand in glove with GitHub Enterprise Cloud. I just released a new Pluralsight course, Getting Started with CircleCI, focused on practical pipelines and how CircleCI thinks about CI/CD. Check it out! www.pluralsight.com/courses/gett...

Microsoft has 3 paths for building agents and most orgs pick wrong: 🔹 M365 Copilot agents = glorified custom GPTs 🔹 Copilot Studio = where real power lives 🔹 Azure Foundry = nuclear option They're layers, not competitors. Start low-code. youtu.be/3jZ_lzsgWTM

Case studies on Microsoft cert exams stress everyone out — until you have a system. My 4-step strategy: → Skim for theme (90 sec max) → Find the callback hint in each question → Targeted tab search → Match and answer, keep moving Work smarter, not harder. youtu.be/jpJc0ElB4rY

New video: Why AZ-104 is the hardest Microsoft cert exam (in my 30 years of experience) 4 pillars of pain: - Breadth AND depth - Azure networking (a whole career crammed in) - Case studies & data analysis - Multiple "correct" answers Plus tips that actually work 👇 🎬 youtu.be/qkSOrJwIQ70

Recording a breakdown of the Microsoft Certification Exam rules: AI bans, braindumps, score challenges, and how your data is shared. If you take MS certs, this clears up a lot of confusion. Video link: youtu.be/pXnM4Dbd2VI #Microsoft #Certification

New video alert! 🚨 Microsoft Practice Assessments aren't what you think they are. Breaking down the truth about these free assessments and what you ACTUALLY need to pass your Microsoft cert exam. Hope it helps! youtu.be/c7dTLq9SzmU #Azure #Certification #CloudComputing #TechEducation

Hi! Here's my candid, NDA-friendly review of Microsoft brand-new expert-level cert Agentic AI Business Solutions Architect (AB‑100). Hope it's helpful! youtu.be/MCIon6epv74

Happy Friday! If you use Wireshark to any extent, you may be interested in my brand-new Pluralsight course, "Visualizing Network Traffic and Advanced Analysis"! Enjoy! www.pluralsight.com/courses/visu...

Hey there! Here's my always-candid, NDA-friendly review of Microsoft's new certification exam, AB-900: Copilot and Agent Fundamentals! Let me know your questions and I'll answer. Thanks! www.youtube.com/watch?v=DrDF...

GitHub Copilot has multiple AI models now - GPT, Claude, Gemini - but most devs don't know that Claude Opus costs 10x more per prompt than the default models. Just dropped a full breakdown of model selection & premium request pricing. Watch here: youtu.be/j9A0STfMMJg #GitHubCopilot #DevTools

GitHub Copilot custom instructions just changed the game. No more repeating your dev standards, security requirements, or dependencies in every prompt. I just dropped a tutorial showing exactly how to set up .instructions files at both repo-level and file-specific granularity. youtu.be/Jt3i1a5tSbM

GitHub Copilot has TWO ways to understand your code: #codebase → context variable (sculpts what it sees) @workspace → chat participant (adds LLM reasoning) Most devs use them interchangeably. They're not. 10-min breakdown: youtu.be/8GP42iEkt94 #GitHubCopilot #DevTools

Prompt files in GitHub Copilot = reusable slash commands for your standard prompts. No more copy-pasting. Just /azure-bicep or /powershell-script and your conventions are already loaded. youtu.be/nNiDplJqU6w #GitHubCopilot #DevTools