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...

Thoughtful Automation Practices

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...

Administer GHAS in GitHub Enterprise Cloud (GH-500)

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...

Automate Security Compliance with GitHub Advanced Security (GH-500)

Ready to study? My latest Pluralsight course is published! Automate Security Compliance with GitHub Advanced Security (GH-500)

www.pluralsight.com/courses/gh50...

Implement Code Scanning and CodeQL (GH-500)

What are you waiting for? Go check out my latest Pluralsight course, Implement Code Scanning and CodeQL (GH-500)!

www.pluralsight.com/courses/gh50...

Prevent Secret Exposure with Secret Scanning (GH-500)

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

Git worktree helpers for parallel Claude Code sessions — Start-ClaudeWorktree / Stop-ClaudeWorktree (PowerShell 7+) Git worktree helpers for parallel Claude Code sessions — Start-ClaudeWorktree / Stop-ClaudeWorktree (PowerShell 7+) - ClaudeWorktree.ps1

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...

Enhance Software Supply Chain Security with Dependency Review (GH-500)

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: Elevate Your IT Career YouTube video by Code To Cloud

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