NexKit Learn
AI tutorials you can trust
Every tutorial here is written from the vendor's own documentation, dated, and watched for upstream changes. When a source moves, the tutorial is flagged for human review — not silently rewritten.
Tutorials
Start with the guides that are current today.
ChatGPT Browser: the built-in browser vs the cloud browser
The desktop app's built-in browser and ChatGPT Work's cloud browser are two different things. This covers what each can do, the website permission model, annotation feedback, and why page content must be treated as untrusted.
ChatGPTCurrentLast verifiedComputer Use: letting ChatGPT drive desktop apps
Setting up Computer Use, the system permissions it needs, the Windows foreground constraint, macOS locked use, and when to reach for a plugin or the built-in browser instead.
ChatGPTCurrentLast verifiedGetting started with ChatGPT: desktop or web
Start using ChatGPT from scratch — choosing between the desktop app and the web, signing in, when to use Chat versus Work, and how to write a first prompt that actually returns something usable.
ChatGPTCurrentLast verifiedChatGPT on mobile: what the official docs actually cover
There is no dedicated mobile page in the ChatGPT documentation set. This covers only what is officially documented — Remote pairing a phone to a computer, what you can do from the phone, notifications, and what is explicitly not on mobile.
ChatGPTReview requiredLast verifiedChatGPT plugins: installing, invoking, and what you are granting
Where the plugin directory lives, what a plugin is actually made of, which surfaces support them, how to invoke one explicitly with @, and what installing one does and does not authorise.
ChatGPTCurrentLast verifiedChatGPT scheduled tasks: work that runs without you
Running ChatGPT work on a schedule — standalone versus in-chat tasks, event triggers from Gmail, Slack and GitHub, worktree isolation, sandbox permissions, and the manual test you should never skip.
ChatGPTCurrentLast verifiedChatGPT skills: turning repeated work into a reusable workflow
The skill directory layout, how progressive disclosure shapes the way you write a description, where Codex loads skills from, creating one with skill-creator, and when to package it as a plugin instead.
ChatGPTCurrentLast verifiedMaking presentations, documents and spreadsheets with ChatGPT
Getting usable files out of ChatGPT — how preview and review differ by surface, using annotations for targeted revisions, and why you should always ask where it saved the output and how it checked it.
ChatGPTCurrentLast verifiedChatGPT Voice: steering work by talking
Where ChatGPT Voice is available, how to start a voice chat, how it differs from voice dictation, using it to coordinate several tasks, and the care that macOS screen context deserves.
ChatGPTCurrentLast verifiedChatGPT Work: delegating the whole job
What ChatGPT Work is for, how to choose between local and cloud execution, which tasks are worth delegating to it, and how to write a prompt that reads like a work order rather than a wish.
ChatGPTCurrentLast verifiedWriting repository rules for Codex with AGENTS.md
How Codex discovers instruction files across global, project and directory scope, what override files are for, what the 32 KiB limit means, writing code review rules, and diagnosing instructions that never load.
CodexCurrentLast verifiedCodex CLI: the whole development loop in one terminal
The four install paths, first run and sign-in, the commands worth learning early (resume, --image, --search, cloud, mcp, /permissions), and when the CLI is the right surface rather than the desktop app.
CodexCurrentLast verifiedCodex Remote: starting, steering and reviewing tasks from your phone
Driving Codex on a connected Mac or PC from a phone — setup, the four core capabilities, which computer to use as host, handing a chat between hosts, and what to check when a session drops.
CodexCurrentLast verifiedRunning the ChatGPT desktop app and Codex on Windows
Installing on Windows, choosing between the native sandbox and WSL2, setting the editor and integrated terminal, which dev tools to install, and the PowerShell execution policy, Git detection and CODEX_HOME issues you will actually hit.
CodexCurrentLast verified
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Categories
ChatGPT
Using ChatGPT in practice: getting started on desktop and web, ChatGPT Work, scheduled tasks, the built-in browser, Computer Use, plugins, skills, files and presentations, mobile, and voice.
10 tutorialsCodex
Codex for developers: working on Windows, the Codex CLI, writing repository rules with AGENTS.md, and driving Codex remotely from your phone.
4 tutorialsClaude
Tutorials for Anthropic's Claude. The structure is in place; content ships only once it can be checked against Anthropic's official documentation.
Coming soonGemini
Tutorials for Google's Gemini. The structure is in place; content ships only once it can be checked against Google's official documentation.
Coming soonCloudflare
Tutorials for Cloudflare. The structure is in place; content ships only once it can be checked against Cloudflare's official documentation.
Coming soon