The quickest way to learn ChatGPT is to open it and type. Nothing to install if you do not want to, and nothing you can break. This lesson is the two-minute tour, so your first go feels like using a tool, not poking at one.
Get in first. Go to chatgpt.com in a browser, or install the desktop app for Mac or Windows and the mobile app. Sign in with your work account if your company has ChatGPT Business or Enterprise. That puts you in the company workspace, where your chats are not used for training. Check the workspace name in the account menu; if you see a personal plan instead, you are in the wrong place.
The screen, in one look
ChatGPT's window has two parts, and that is all you need to start.
On the left is the sidebar: New chat, a search box, your Projects (folders for ongoing work, a Part 4 topic), Space for pages and files, and Recents, your past chats with names ChatGPT picks for you.
In the middle is the conversation, with the message box at the bottom. Type, press send, done. The + button attaches files and opens the tools, such as web search and deep research. The model menu in the message box sets how hard ChatGPT thinks; that is the next lesson.
In the desktop app you will also see a switch at the top between Chat and Work. Chat is the conversation you know. Work hands ChatGPT a bigger job that runs in steps, like a report or a spreadsheet. Codex, for software, sits in its own view. For now, stay in Chat.
Your first message
One habit matters more than any button: write to ChatGPT like a sharp colleague, not a search engine. Full sentences, a little context, a clear ask.
"weekly plan" gets you something generic. This gets you something useful:
Plan my working week. I work Monday to Friday, roughly 9 to 5.
I have fixed meetings Tuesday and Thursday mornings.
My big goal this week is to finish a client proposal.
Give me a day-by-day plan with time for deep work and a buffer for surprises.
Same idea, but now ChatGPT knows your hours, your fixed points, and your goal, so the plan fits your week. The context you add turns a generic reply into a useful one. Part 3 is all about this; for now, just notice the difference.
Keeping your chats tidy
Every chat is saved automatically in Recents. You can rename it, pin it, or find it later with search. If you want a chat that leaves no trace, use Temporary Chat: it is not saved to your history and does not feed ChatGPT's memory.
One small rule pays off fast: one topic per chat. ChatGPT reads the whole conversation each time it answers, so a focused chat gets a sharper reply, and a chat that wanders from holidays to tax to lunch gets a muddled one.
Steer with plain follow-ups ("shorter", "more formal", "add an example") instead of starting over. And do not chase a perfect first message. It is a conversation, not a vending machine.
Try it
Open ChatGPT, signed in to your work account. Paste the weekly-plan prompt above, but swap in your real hours, meetings, and goal. Read the plan. Then send one follow-up to steer it: "make Wednesday lighter" or "add 30 minutes of email each morning".
Notice two things. The context you gave changed the answer. And the follow-up changed it again, without starting over. That back-and-forth is how most real work in ChatGPT gets done.
(General exercise. Role and industry versions come once accounts are in.)