Getting Started with ChatGPT

Creating Your Account

Getting started with ChatGPT requires a free account on OpenAI's platform. The process takes under five minutes.

Step 1 — Visit the website. Go to chat.openai.com. You will see the ChatGPT interface with a sign-up prompt.

Step 2 — Sign up. Click "Sign up" and choose your preferred method: email address, Google account, Microsoft account, or Apple ID. Using Google sign-in is the fastest option for most users and avoids creating yet another password to remember.

Step 3 — Verify your email. If you registered with an email address, OpenAI will send a verification link. Click it within the expiry window.

Step 4 — Phone verification. OpenAI may ask for a mobile number to verify you are not a bot. Indian mobile numbers (+91) work reliably with this step. The verification SMS typically arrives within 30 seconds.

Step 5 — Complete your profile. Provide your name and date of birth. Accept the usage policies — it is worth skimming these as they clarify what OpenAI may do with your conversation data and what uses are prohibited.

Once done, you land in the main chat interface and can start a conversation immediately on the free plan.

Understanding the Plans

OpenAI offers four tiers. Choosing the right one depends on how heavily you use ChatGPT and whether you need the most capable models.

Feature	Free	Plus (₹1,650/month approx.)	Team (₹2,500/user/month approx.)	Enterprise (custom pricing)
Models available	GPT-4o mini, limited GPT-4o	GPT-4o, GPT-4o mini, o1, o3	All Plus models + admin controls	All models, data privacy guarantees
Message limits	10-15 GPT-4o messages per 3 hours (then falls back to mini)	Higher limits, priority access	Higher limits per user	Highest limits, SLA
Image generation (DALL-E)	Limited	Included	Included	Included
Advanced data analysis	No	Yes	Yes	Yes
Custom GPTs	Use only	Create and use	Create and use + shared workspace	Full control
Memory	Limited	Full	Full	Full with admin controls
File uploads	Limited	Up to 10 files per conversation	Up to 10 files per conversation	Higher limits
Web browsing	Limited	Yes	Yes	Yes
API access	No	No (separate API billing)	No (separate API billing)	Negotiated
Conversation privacy	Conversations used for training by default	Same (can opt out in settings)	Not used for training by default	Not used for training
Priority server access	No	Yes	Yes	Yes

Which Plan Should You Choose?

Free: Sufficient for occasional use — drafting an email, answering a one-off question, experimenting with the interface. The model quality (GPT-4o mini) is genuinely good for most everyday tasks.

Plus: Worth it if you use ChatGPT daily for substantive work — writing, research, coding, or analysis. The access to full GPT-4o, the o1 reasoning model, and advanced data analysis (which lets you run Python code on uploaded files, including Excel sheets) dramatically expands what is possible.

Team: Designed for small businesses and departments (minimum two seats). Adds a shared workspace where team members can access and build custom GPTs, and conversations are excluded from training data by default — important if your work involves client or company information.

Enterprise: For organisations that need compliance guarantees, SSO integration with their identity provider (Okta, Azure AD, etc.), dedicated account management, and contractual data privacy commitments.

For a student or individual professional in India, the free tier is a solid starting point. Upgrade to Plus once you find yourself hitting the message limits or needing GPT-4o's stronger reasoning for complex tasks.

Navigating the Interface

The ChatGPT interface is intentionally minimal, but there is more beneath the surface than first appears.

The left sidebar shows your conversation history, organised reverse-chronologically by default. At the top is a "New chat" button. Below it, conversations are grouped by time period — Today, Yesterday, Previous 7 days, and older periods.

At the bottom of the sidebar is your account avatar. Clicking it reveals account settings, the option to upgrade your plan, and a way to log out.

The Chat Area

The main area is a white canvas. When you start a new conversation, you see a greeting and a prompt input box at the bottom. Previous conversations show your messages and ChatGPT's responses in alternating bubbles.

You can hover over any ChatGPT response to reveal action buttons:

Copy to clipboard
Thumbs up / thumbs down (sends feedback to OpenAI)
Regenerate (generates a fresh response to the same prompt)
Edit (available on your own messages — lets you modify and resubmit)

The Model Selector

In the top-left of the interface (on Plus and above), a dropdown lets you choose which model handles your conversation. Options typically include GPT-4o, GPT-4o mini, o1, and o3-mini. The choice persists within the conversation but resets for each new one.

When to use which model:

Model	Best for
GPT-4o	Default for most tasks — strong balance of speed, quality, and cost
GPT-4o mini	Faster, cheaper, good for straightforward tasks
o1 / o3	Complex reasoning — maths, logic puzzles, multi-step code; slower but more thorough

The Attachment Button

Next to the message input box is a paperclip icon. Click it to upload files. Supported formats include PDFs, Word documents, images (JPG, PNG), CSV files, and code files. On Plus, you can also paste URLs in some contexts or drag and drop files directly.

A practical use: Upload a 10-page PDF of your company's HR policy and ask ChatGPT to summarise the leave entitlements in a table. This alone justifies the Plus subscription for many professionals.

Memory

ChatGPT can remember facts about you across conversations. When Memory is enabled (Settings → Personalization → Memory), the model stores notes such as "User is a chartered accountant in Pune" or "User prefers responses in Hindi." You can view, edit, and delete these memories at any time.

To check what it remembers: Settings → Personalization → Manage Memory.

Custom Instructions

Custom Instructions (Settings → Personalization → Custom Instructions) let you define two persistent preferences:

About you: Background the model should always know — your profession, expertise level, location, language preferences.
How you want responses: Tone, format, length preferences — for example, "Always use bullet points. Avoid jargon. Give examples from the Indian market."

Custom instructions are applied to every new conversation automatically, saving you from repeating context each time.

The ChatGPT Mobile App

OpenAI offers official apps for iOS and Android. The mobile experience is nearly feature-complete with the web version, with a few additions.

Installing the App

Search "ChatGPT" in the App Store or Google Play. The official app is by OpenAI and is free to download. Be careful of third-party apps that appear to be ChatGPT but are not — the official app is the only one that connects to OpenAI's servers directly.

Voice Mode

The mobile app supports voice input and voice responses. Tap the microphone icon in the message bar to speak your prompt. On Plus, you can access Advanced Voice Mode, which supports near-real-time spoken conversation with the model — useful for practising spoken English, getting answers while commuting, or hands-free use.

Camera Input

On mobile, you can tap the camera icon to photograph a document, equation, diagram, or object and ask ChatGPT to explain, translate, or solve it. Common uses include:

Photographing a maths problem from a textbook and asking for a step-by-step solution
Photographing a menu in an unfamiliar language and asking for a translation
Photographing a product label and asking whether the ingredients are safe

Syncing Across Devices

Your conversations sync automatically between the web and mobile app. Start a conversation on your laptop at work, continue it on your phone during your commute home.

Keyboard Shortcuts

The desktop web interface supports a number of keyboard shortcuts that meaningfully speed up your workflow.

Shortcut	Action
`Ctrl + Shift + O` (Windows) / `Cmd + Shift + O` (Mac)	Open a new conversation
`Ctrl + Shift + S` / `Cmd + Shift + S`	Toggle sidebar open/closed
`Ctrl + Shift + C` / `Cmd + Shift + C`	Copy last response
`Ctrl + Enter` / `Cmd + Enter`	Submit message (alternative to clicking the send button)
`Shift + Enter`	Add a newline within the message box without sending
`Ctrl + K` / `Cmd + K`	Open conversation search

The Shift + Enter shortcut is particularly useful when you want to write a multi-paragraph prompt without accidentally sending it mid-way.

Organising Conversations with Folders

As you use ChatGPT regularly, your sidebar fills with dozens of conversations. Without organisation, finding a specific past conversation becomes tedious. ChatGPT supports folders (also called Projects) to keep things tidy.

Creating a Project

In the sidebar, look for the "+" button next to "Projects" or right-click on an existing conversation. Name your project meaningfully — for example "UPSC Prep 2026", "Client Proposals", "Python Learning", or "Meesho Product Listings."

Moving Conversations into Folders

Right-click any conversation in the sidebar and select "Move to project." You can also drag and drop. A conversation can belong to one project at a time.

Project-Level Custom Instructions

One of the most powerful features of Projects: you can set custom instructions that apply only within that project, overriding your global custom instructions. For example:

In your "UPSC Prep" project, set: "I am preparing for UPSC 2026. Always frame answers around the UPSC syllabus and examiner expectations."
In your "Python Learning" project, set: "I am a beginner Python programmer. Explain every concept from scratch. Always include runnable code examples."

This means you can have one ChatGPT account serve multiple distinct use cases without constantly re-explaining your context.

Searching Conversations

Use Ctrl + K (or Cmd + K on Mac) to open the conversation search bar. Type any keyword and it will surface matching conversations. This is faster than scrolling through months of history.

Common Pitfalls

Using the wrong model for the task. Sending a complex reasoning problem to GPT-4o mini when o1 would handle it better wastes your time. Conversely, using o1 for a simple "rewrite this email" task is slower than necessary. Match the model to the complexity of the task.

Forgetting to set Custom Instructions. New users often repeat the same context ("I am a software developer in Bangalore working on a React app...") at the start of every conversation. Set it once in Custom Instructions and never type it again.

Letting the conversation run too long. Very long conversations hit the context window and also become harder to navigate. When you shift to a new sub-topic, start a fresh conversation rather than continuing indefinitely in one thread.

Not using Projects. Without Projects, all conversations pile into one undifferentiated list. A few minutes setting up folders saves hours of searching later.

Trusting the free plan's limits without knowing them. The free plan has message limits on the stronger models (GPT-4o). If you are in the middle of an important task and hit the limit, you may be downgraded to a weaker model mid-conversation. For critical work, either use Plus or structure your prompts to accomplish the task in fewer messages.

Uploading sensitive files without reading the privacy policy. Files you upload to ChatGPT are processed by OpenAI's servers. Do not upload documents containing confidential client data, employee records, or proprietary financial information unless you are on a Team or Enterprise plan with appropriate data agreements in place.

Practice Exercises

Create a free ChatGPT account if you do not already have one. Set up Custom Instructions with your name, profession, city, and one formatting preference (e.g., "Always give examples relevant to Indian markets"). Start a new conversation and notice how the model incorporates this context without you having to mention it.
Create three Projects in the sidebar: one for a current work or study topic, one for a hobby, and one called "Experiments." Move five existing conversations into the appropriate project.
Open a new conversation and use Shift + Enter to write a three-paragraph prompt without sending it prematurely. Then use Ctrl + Enter (or Cmd + Enter) to submit it. This builds keyboard-first muscle memory.
Install the ChatGPT mobile app. Enable voice mode and ask it a question verbally. Compare the experience to typing. Note any differences in response quality or style.
Upload a one-page PDF (a sample invoice, a bank statement with dummy data, or any non-sensitive document) and ask ChatGPT to extract the key numbers into a table. This is a preview of the advanced data analysis capability covered in later chapters.

Summary

Creating a ChatGPT account is free and takes under five minutes; Indian mobile numbers work for phone verification.
Four plan tiers serve different needs: Free for occasional use, Plus (approximately ₹1,650/month) for daily professional use with full GPT-4o access, Team for organisations, and Enterprise for compliance-heavy deployments.
Key UI features include the model selector, file attachment, Memory (remembers facts across sessions), and Custom Instructions (persistent background context for every new chat).
The mobile app adds Voice Mode and Camera input, making ChatGPT accessible hands-free and useful for visual tasks like photographing a maths problem or a foreign-language menu.
Keyboard shortcuts — especially Shift + Enter for multi-line prompts and Ctrl + K for conversation search — meaningfully speed up daily use.
Projects (folders) are essential for organising conversations by topic, and each Project can have its own Custom Instructions that override the global defaults.