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Tim Warner

@techtrainertim.bsky.social

Tim Warner 🌐 TechTrainerTim.com πŸ“ Nashville, TN, USA (Central Time Zone) Tech educator specializing in DevOps with Microsoft Azure, GitHub Enterprise Cloud, and the Copilot generative AI ecosystem.

926 Followers  |  1 Following  |  129 Posts  |  Joined: 09.05.2023  |  1.3747

Latest posts by techtrainertim.bsky.social on Bluesky

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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...

16.02.2026 15:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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I realized I was using "token" sloppily. Not wrong exactly, just imprecise.

This quick video separates tokens, identifiers, and symbols by layer:

πŸ“ Text β†’ Tokens (lexing)
🌳 Tokens β†’ Structure (parsing)
πŸ”— Names β†’ Symbols (binding)
⚑ Symbols β†’ Values (runtime)

youtu.be/bsB3BS2hC6Q

01.02.2026 18:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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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
πŸ”₯ Ctrl+Shift+L selects ALL occurrences
πŸ”§ Toggle modifier key to Ctrl if Alt feels wrong

8 min tutorial:
youtu.be/7NgU_FTnGJ0

31.01.2026 18:40 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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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 β†’ 14MB. Perfect for uploading codebases to ChatGPT/Claude.

youtu.be/WaZkdLRZubM

27.01.2026 16:22 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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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

20.01.2026 17:27 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Claude Cowork just saved me hours of scutwork:

πŸ”Ή Bulk social posts from 20 YT videos β†’ Buffer CSV
πŸ”Ή 9-year-old conference repo β†’ 2026 presentation
πŸ”Ή Folder-based, not chat-based

This is what real AI automation looks like.

youtu.be/vz6y5BaUQsc

19.01.2026 23:19 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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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.

πŸ”— www.pluralsight.com/courses/circ...

19.01.2026 17:08 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Stop mousing around in VS Code.

The Command Palette has hidden prefix modes:

@ β†’ symbols in current file
# β†’ symbols across your whole project
: β†’ jump to any line
? β†’ shows all the options

Quick win: Remove the > caret with backspace for instant file search.

youtu.be/fZnS4DA9egU

18.01.2026 17:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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GitHub killed Knowledge Bases. Spaces are the replacement.

Getting them working in VS Code? That was a journey.

πŸ”§ HTTP transport, not Docker stdio
πŸ”‘ X-MCP-Toolsets: default,copilot_spaces
⚠️ Only 2 tools right now, but watch for updates

Full walkthrough:
youtu.be/4luVUa-pS-c

15.01.2026 21:23 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Finally got BYOK working with GitHub Copilot!

πŸ”Ή Deploy your model in Azure AI Foundry
πŸ”Ή Register API key in GitHub Enterprise
πŸ”Ή Pick it from VS Code's model selector
πŸ”Ή Fine-tuning + agentic features unlocked

Stock models are fine. YOUR models are better.

youtu.be/gndyFfyp2J0

15.01.2026 01:12 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Code To Cloud: 2026 Certification Secrets: Elevate Your IT Career
YouTube video by Code To Cloud Code To Cloud: 2026 Certification Secrets: Elevate Your IT Career

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...

13.01.2026 13:32 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Your wall-of-text AI prompts are holding you back.

πŸ”Ή XML-style tags give LLMs clear boundaries
πŸ”Ή All 3 major vendors recommend it
πŸ”Ή No valid XML needed -- intent matters

Quick demo + Claude Skills automation:
youtu.be/TBeZmQiZR5k

31.12.2025 19:34 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Just dropped a new video breaking down Copilot Studio agent creation from scratch.
🎯 Plain English β†’ working AI agent
πŸ“š Add your own knowledge sources
πŸ§ͺ Test in real-time before publishing
πŸš€ Live demo site in seconds
No code required. Easier than it looks.
youtu.be/tTj__zkK0dQ

30.12.2025 17:53 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The chat UI lies to you about how LLMs actually work.

πŸ“ START = hot zone (high recall)
πŸ“ MIDDLE = risk zone (gets missed)
πŸ“ END = hot zone (immediate attention)

Structure beats sprawl. Position beats length.

New lessonβ€”12 min, no fluff:
youtu.be/oOL0WY1b_x4

20.12.2025 18:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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New video: How to create an agent in M365 Copilot

The catch? These aren't really "agents"β€”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

19.12.2025 15:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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New video: Subagents in Claude Code

πŸ”§ Spawn parallel AI instances with isolated context
⌨️ Ctrl+B to background agents while you work
πŸ“ Project or user-level storage for reuse
πŸ“Š /context shows your token breakdown

Real walkthrough, real debugging, real learning. Enjoy!

youtu.be/dk0kn2evY38

17.12.2025 19:04 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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I'm teaching context engineering, so I built a demo. Simple MCP server (~400 lines TypeScript):

β€’ Store notes locally
β€’ Search by relevance
β€’ Compress to fit a character budget

Run it in VS Code with Copilot. Clone it, break it, learn from it.
πŸ”— github.com/timothywarner-org/copilot-memory-store

14.12.2025 15:59 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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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...

12.12.2025 16:57 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Microsoft has 3 paths for building agents and most orgs pick wrong:

πŸ”Ή M365 Copilot agents = glorified custom GPTs
πŸ”Ή Copilot Studio = where real power lives
πŸ”Ή Azure Foundry = nuclear option

They're layers, not competitors. Start low-code.

youtu.be/3jZ_lzsgWTM

28.11.2025 18:03 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Case studies on Microsoft cert exams stress everyone out β€” until you have a system.

My 4-step strategy:

β†’ Skim for theme (90 sec max)
β†’ Find the callback hint in each question
β†’ Targeted tab search
β†’ Match and answer, keep moving

Work smarter, not harder.
youtu.be/jpJc0ElB4rY

27.11.2025 16:07 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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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 πŸ‘‡

🎬 youtu.be/qkSOrJwIQ70

26.11.2025 16:01 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
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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

25.11.2025 19:43 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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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

23.11.2025 21:26 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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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

22.11.2025 23:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Visualizing Network Traffic and Advanced Analysis

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...

21.11.2025 14:27 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Microsoft Cert Exam Review: AB-900, Copilot and Agent Administration Fundamentals
YouTube video by Tim Warner Microsoft Cert Exam Review: AB-900, Copilot and Agent Administration Fundamentals

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...

19.11.2025 17:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
GitHub Copilot Models Explained
YouTube video by Tim Warner GitHub Copilot Models Explained

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

25.10.2025 18:24 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Master GitHub Copilot Custom Instructions
YouTube video by Tim Warner Master GitHub Copilot Custom Instructions

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

24.10.2025 16:48 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
GitHub Copilot Workspace Indexing: @workspace vs #codebase Explained
YouTube video by Tim Warner GitHub Copilot Workspace Indexing: @workspace vs #codebase Explained

GitHub Copilot has TWO ways to understand your code:

#codebase β†’ context variable (sculpts what it sees)
@workspace β†’ chat participant (adds LLM reasoning)

Most devs use them interchangeably. They're not.

10-min breakdown: youtu.be/8GP42iEkt94

#GitHubCopilot #DevTools

23.10.2025 16:28 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
How to Use Prompt Files in GitHub Copilot VS Code
YouTube video by Tim Warner How to Use Prompt Files in GitHub Copilot VS Code

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

22.10.2025 19:42 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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