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How to choose the right chart for your question
Pick the chart for the question, not the template gallery. Use comparison, trend, composition, and distribution on purpose, plus a short never-do-this list for pies, 3D effects, and…
How to make a Custom GPT in ChatGPT for a task you do again and again
Part 1 of the Custom GPTs tutorial. Build one simple GPT for a repeating job: clear instructions, no actions yet, non-secret knowledge only, and a Preview test set…
How to use Claude Cowork on folders, documents, and spreadsheets
Part 3 of Claude Cowork tutorial. Work folders, docs, and sheets with a clear recipe: goal, inputs, constraints, format, and done check. Turn receipts into expense workbooks, notes…
Before you make a data chart, decide what decision it should help someone make
A chart is a job, not decoration. Learn explore versus explain versus persuade so the next deck chart answers a real decision instead of filling a slide with…
Git-friendly habits for beginners
Part 5 closes the ChatGPT Codex tutorial with beginner git habits: branch per task, small commits, clear messages, PR review, and never force-pushing blind. Learn undo basics, recap…
