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Sehaj Singh

@heysehajsingh

Aug 23 • 11 tweets • 6 min read • Read on X

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Amazon is offering free online courses.

No application or fee required.

Here are 9 FREE courses you don't want to miss:

1. Building Language Models on AWS

Learn to prepare, build, train, deploy, and monitor machine learning models on AWS using SageMaker.

explore.skillbuilder.aws/learn/course/e…

2. Foundations of Prompt Engineering

- Define prompt engineering and apply general best practices
- Identify the basic types of prompt techniques
- Apply advanced prompt techniques, and more

explore.skillbuilder.aws/learn/course/e…

3. Fundamentals of Analytics on AWS – Part 1

Learn fundamental concepts such as types of analytics, the 5 V’s of big data, and the challenges associated with processing high volumes of data.

explore.skillbuilder.aws/learn/course/e…

4. Customizing and Evaluating LLMs Using Amazon SageMaker JumpStart

This course covers customizing and evaluating LLMs, exploring prompt engineering, RAG, and fine-tuning. You’ll learn to fine-tune, deploy, and assess models.

explore.skillbuilder.aws/learn/course/i…

5. Machine Learning Terminology and Process

This course covers basic machine learning concepts, detailing each step and key terms in the ML process.

explore.skillbuilder.aws/learn/course/i…

6. Building Generative AI Applications Using Amazon Bedrock

A course is designed for application developers interested in building gen AI applications with Amazon Bedrock APIs or AWS-LangChain.

explore.skillbuilder.aws/learn/course/i…

7. AWS Flash - Generative AI in Action: Real-World Use Cases

This course gives an overview of generative AI use cases and their business impact, with real-world examples and case studies from major industries.

explore.skillbuilder.aws/learn/course/i…

8. Machine Learning Essentials for Business and Technical Decision Makers

Explore best practices for integrating ML into business processes.

The course covers roadmapping, assessing if ML suits your needs, and key components for successful adoption.

explore.skillbuilder.aws/learn/course/i…

9. No-code Machine Learning and Generative AI on AWS

Learn to build ML models for tabular and time series data without deep ML knowledge.

You'll also learn to use, fine-tune, and evaluate output from foundation models to support generative AI use cases.

explore.skillbuilder.aws/learn/course/i…

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More from @heysehajsingh

Sehaj Singh

@heysehajsingh

Aug 22

🚨BREAKING: Prompt engineering is dead.

The only ChatGPT-5 prompt you’ll ever need.

Great way to create a prompt for ANYTHING you need.

Here’s how to use it (with real examples): 👇

1. The Meta-Prompt

Copy this into ChatGPT:

"You will be my prompt engineer. I want to achieve: [insert your goal]. Please restate this in your own words and ask any clarifying questions.

Once confirmed, create the final optimized prompt."

This transforms ChatGPT into your personal prompt engineer.

Example: Writing a Blog Post

You: "I want to write a 1,500-word blog post on why remote work increases productivity."

ChatGPT: "Understood. Would you like the tone to be formal or casual? Do you need factual sources or just opinions?"

You provide details → ChatGPT creates the ideal blog prompt for you.

Read 8 tweets

Sehaj Singh

@heysehajsingh

Aug 20

I finally understand how LLMs actually work and why most prompts suck.

After reading OpenAI’s internal docs + top research papers…

Here are 10 prompting techniques that completely changed my results: 👇

You’re going to learn:

• What great prompts look like
• How to structure them for better output
• 10+ expert techniques that boost accuracy, logic & creativity

Whether you're a beginner or pro this will level you up.

1. Beginner: Zero-Shot Prompting

Give the model a clear, specific instruction.

✅ "Summarize this article in 3 bullet points."
❌ "What do you think about this?"

Clarity > Creativity at this stage.

Read 15 tweets

Sehaj Singh

@heysehajsingh

Aug 19

Gemini feels like having 10 employees who never sleep.

I’ve used it to code apps, write content, handle research and build products automatically.

Here are 10 ways you can use it (that nobody talks about):

1. Teacher

“Act as a world-class teacher. Explain [TOPIC] in 3 levels: beginner, intermediate, expert. After each explanation, give me 2 practice questions and feedback guidelines for my answers.”

Learn anything 10x faster by leveling up step by step.

2. Copywriter

“Act as a direct-response copywriter. Write a persuasive [TYPE] using the AIDA framework. Emphasize benefits, urgency, and clarity. Target audience: [AUDIENCE]. Call to action: [CTA].”

Turns Gemini into your personal marketing agency.

Read 13 tweets

Sehaj Singh

@heysehajsingh

Aug 17

holy sh*t… Claude 4 Sonnet just went full investment banker mode

3 mega prompts =

• earnings call analysis
• valuation models
• thesis writing
• risk analysis

this is elite tier

here’s the exact mega-prompt I used 👇

What do Goldman analysts actually do?

- Company valuations
- Market comps
- Investment memos
- Risk modeling
- Decks for MDs to take credit for

Now?

AI can automate 90% of it.

You just need the right prompts.

1/ The Investment Banking Analyst

Prompt:

"You are a Goldman Sachs VP-level analyst with 10+ years of experience in investment banking. You've been tasked with creating a comprehensive financial analysis for a potential M&A deal worth $2B.

Your mission:
1. Build a detailed DCF valuation model with multiple scenarios
2. Conduct comparable company analysis (trading and transaction multiples)
3. Assess synergy opportunities and integration risks
4. Create sensitivity analysis and scenario planning
5. Prepare executive summary for client presentation

Use frameworks like:
- DCF modeling with terminal value calculations
- Trading comps and transaction comps analysis
- Precedent transaction analysis
- Accretion/dilution analysis
- Risk assessment and mitigation strategies

Output everything in investment banking format: Executive Summary, Valuation Summary, Detailed Analysis, Appendix with assumptions.

Target company: [COMPANY NAME]
Industry: [INSERT INDUSTRY]
Deal type: [M&A/IPO/FINANCING]"

Read 9 tweets

Sehaj Singh

@heysehajsingh

Aug 14

After 2 years of using ChatGPT, I can say that it is the technology that has revolutionized my life the most, along with the Internet.

So here are 10 prompts that have transformed my day-to-day life and that could do the same for you:

1. Learn anything from a 20-year expert even if you're clueless

"Pretend you are an expert with 20 years of experience in {industry/topic}. Break down the core principles a total beginner must understand. Use analogies, step-by-step logic, and simplify everything like I’m 5."

2. Brutally honest thought partner to sharpen your thinking

"Act as my personal thought partner. I’ll describe {my idea/problem}, and I want you to question every assumption, point out blind spots, and help me evolve it into something 10x better."

Read 12 tweets

Sehaj Singh

@heysehajsingh

Aug 13

Google just gave everyone the power to build their own AI assistant.

No coding. No subscription. 100% free.

Here’s how to set yours up in under 5 minutes👇

1. Go to Gemini

➡Visit
➡Click "Gem Manager"
➡Hit "New Gem"

Gems are custom AI assistants you design—Google even has pre-made ones like Brainstormer, Career Guide, and Coding Partner. gemini.google.com

2. Name + Brain

➡Give your Gem a name.
➡Write its instructions (what it should do, how it should act).
➡Use the Magic Pencil ✏️ to auto-rewrite and improve them.

You’re now creating your own custom AI assistant. 🛠