ChatGPT — Guide | AI devotee

ChatGPT — User Guide

OpenAI's most popular AI chat assistant, with GPT-4o.

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Strengths

Super strong natural language understanding and generation capabilities, top-notch writing quality in the industry
Excellent code generation and debugging capabilities, supporting almost all mainstream programming languages
Multi-turn dialogue memory to complete complex multi-step tasks
GPT-4o supports images, documents, and data analysis (Data Analysis)
The ecosystem of plug-ins and GPTs is rich, and exclusive AI assistants can be customized

Best for

Long-form writing, polishing and translation (reports, emails, papers)
Code generation, Debug, code explanation
Data analysis: Upload Excel/CSV to automatically generate charts and insights
Brainstorming, creative planning, advertising copywriting
Learn new things: explain complex concepts like a teacher

basic conversation skills

Master these tips to make ChatGPT’s answers more accurate and useful.

Scenario

Let ChatGPT play a specific role to improve answer quality

Prompt example

You are a senior product manager with 10 years of experience, well versed
in SaaS product design.


Please help me analyze the following user feedback and give product improvement
suggestions:


[Paste user feedback content]

Output / what to expect

ChatGPT will analyze feedback from a professional PM perspective and give structured priority suggestions.

Includes: high-priority issues, classification of user pain points, and feasible solutions.

Tips

The more specific the role setting (years of experience, professional direction), the more professional the answer will be.

Scenario

Requires structured output for direct use

Prompt example

Please help me write an article outline on "Improving remote work efficiency".


Requirements:


1. Use Markdown format


2. Contains 5 main chapters


3. Each chapter has 3 sub-points


4. Add a summary at the end

Output / what to expect

Output a clear Markdown outline that can be directly pasted into the document tool for use.

The structure is complete, the logic is clear, and each point has substantial content.

Tips

Explicitly specify the output format (Markdown, table, JSON, etc.) to save time on post-processing.

Code development assistance

ChatGPT is an excellent programming assistant suitable for code generation, debugging and code interpretation.

Scenario

Quickly generate functional code

Prompt example

Write a function in Python, the function is:


- Read a CSV file


- Filter out rows with less than 1000 in the "Sales" column


-Group by "Region" column and calculate average sales for each group


- Returns a dictionary, the key is the region name, the value is the average
sales (retaining two decimal places)




Please add detailed comments and error handling.

Output / what to expect

import pandas as pd
from typing import Dict

def analyze_sales_by_region(filepath: str) -> Dict[str, float]:
    """
    Read CSV and calculate average sales by region (only records with sales >= 1000)
    """
    try:
        df = pd.read_csv(filepath)
        filtered = df[df['sales'] >= 1000]
        result = filtered.groupby('region')['sales'].mean()
        return {k: round(v, 2) for k, v in result.items()}
    except FileNotFoundError:
        raise FileNotFoundError(f"File does not exist: {filepath}")
    except KeyError as e:
        raise KeyError(f"Column name does not exist: {e}")

The code contains type annotations and exception handling, and can be used directly.

Tips

Explain the input and output formats and boundary conditions when describing requirements, and the code quality will be higher.

Scenario

Debug error message

Prompt example

My Python code reports an error, please help me find the problem and
fix it:




Error message:


TypeError: unsupported operand type(s) for +: 'int' and 'str'




Code:


age = input("Please enter your age: ")


next_year = age + 1


print(f"You will be {next_year} years old next year")

Output / what to expect

ChatGPT pinpoints the problem: input() returns a string and needs to be converted with int().

And give the repaired code: next_year = int(age) + 1

Also explain the reasons to help understanding rather than just giving answers.

Tips

Paste the complete error message + relevant code so that ChatGPT can locate the problem more accurately.

Data analysis (upload files)

ChatGPT Plus users can directly upload Excel/CSV for data analysis and visualization.

Scenario

Upload sales data and automatically generate analysis reports

Prompt example

[Upload sales_data.xlsx]




Please analyze this sales data and tell me:


1. Which month has the highest sales? lowest?


2. Which product category contributes the most revenue?


3. What are the monthly trends in sales?


4. Use charts to show the above conclusions

Output / what to expect

ChatGPT will automatically:

Read and understand data structures
Perform statistical analysis using Python code
Generate visual charts such as line charts and bar charts
Give text summaries and business insights

Tips

Data analysis features require ChatGPT Plus ($20/month). Make sure the data format is clean before uploading.

Writing and Content Creation

ChatGPT’s writing capabilities are one of its most prominent strengths.

Scenario

Polish a rough draft into a professional article

Prompt example

Please polish the following draft into a professional business email
with a formal but friendly tone:




Draft:


"Hello, our company would like to cooperate with you on a project, probably
about AI.


I don’t know if you are interested. If so, you can chat."




Requirements:


- Keep the core meaning unchanged


- Add appropriate beginning and end


- Length should be controlled within 150 words

Output / what to expect

Output professional business emails, including:

Formal greeting
Clear expression of intention to cooperate
Specific next steps (e.g. looking forward to arranging a video conference)
Polite ending

Tips

Provide the original draft + target style + word limit for the best polishing effect.

Compared with similar tools

Tool	Strength	Best for	Pricing
ChatGPT This tool	Writing, coding, general tasks, the richest ecosystem	Users who need a versatile AI assistant	Free version / Plus $20/month
Claude	Long document processing, detailed reasoning, and high security	Scenarios when dealing with long documents and requiring more careful answers	Free version / Pro $20/month
Gemini	Integrate with Google ecosystem for real-time search	People who want real-time information using Google Workspace	Free version / Advanced $19.99/month
Copilot	Deep integration with Microsoft 365	Office users, business users	Free version / Pro $20/month

Sources & references:

OpenAI official documentation (2025-03)
ChatGPT Prompt Word Engineering Guide - OpenAI (2025-03)
Minority: In-depth User Guide to ChatGPT (2025-01)