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Explore practical guides, step-by-step masterclasses, and foundational definitions across AI, SQL, and data systems โ written in plain, human English.
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How to use skills and scheduled tasks in ChatGPT Codex safely, one at a time
Skills, tasks, and scheduled help in ChatGPT Codex are power-ups, not day-one defaults. Climb a complexity ladder, hedge product renames, and never leave high-stakes deploys unattended.
Team habits that keep AI coding tools like Claude Code safe
Part 10 closes the Claude Code tutorial with team rails: shared CLAUDE.md and skills, required PRs and green CI, secrets policy, no silent prod deploys from agents, and…
How to handle dates, time zones, and fiscal calendars in your reports
Time zones and fiscal calendars quietly break dashboards people trust. Learn to store UTC, display local time, separate calendar months from fiscal periods, and cast dates safely in…
How to explore a code project safely with ChatGPT Codex before changing it
Part 2 of the ChatGPT Codex tutorial. Explore a repo safely: ask for a map with real paths, bound what you will not touch, then make a small…
How to review Claude Code’s changes before you ship them
Part 9 of the Claude Code tutorial. Review every agent change set: read the diff, run tests, check secrets and scope, then own the commit. Undo with restore…




