All Articles & Tutorials
Explore practical guides, step-by-step masterclasses, and foundational definitions across AI, SQL, and data systems — written in plain, human English.
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What is ChatGPT Work mode, and what is it for?
Work mode is the agent for multi-step office jobs: files, apps, decks, sheets, and docs you still review. Part 1 of the ChatGPT Work tutorial separates Work from…
What are Claude Code skills, and how do you add and use them?
Part 4 of the Claude Code tutorial. Skills are on-demand playbooks in SKILL.md files. Add them under .claude/skills or ~/.claude/skills, invoke with /name, or let Claude load them…
Intro to plotting for analysis
A chart for analysis is a decision tool, not decoration. Learn a small matplotlib stack that turns pandas groupbys into honest bars and lines you can explain at…
How to tell a data story that earns the trust of senior leaders
Seniors trust analysts who lead with context, numbers, uncertainty, and a clear ask. Part 3 of Analyst career path gives a story spine and email skeleton you can…
How to use ChatGPT for emails, meeting notes, and workplace writing
Part 5 closes the ChatGPT everyday tutorial: audience-first emails, meeting agendas, action lists, and who/what/when follow-ups. Never auto-send. Check policy. Next: Work, then Codex, then Custom GPTs.
