Here's a consolidated guide of the best resources to learn Prompt Engineering, updated for November 2025.

🤖 Claude (Anthropic)

• Anthropic Cookbook (GitHub) ⭐
  • Link: github.com/anthropics/anthropic-cookbook
  • Official collection of notebooks with ready-to-use Python code examples. Includes classification techniques, RAG, summarization, tool use, and more.
• Prompt Library
  • Link: docs.anthropic.com/prompt-library
  • Extensive collection of 50+ optimized prompts for real use cases.

💬 ChatGPT (OpenAI)

• Prompt Engineering Best Practices - Help Center ⭐
  • Link: help.openai.com - Prompt Engineering Best Practices
  • Official guide from OpenAI's Help Center for creating effective prompts.
• OpenAI Academy: Prompting Resource (Updated 2025)
  • Link: academy.openai.com - Prompting Resource
  • Teaches simple steps with examples by professional role.

☁️ AWS (Amazon Bedrock)

• Official Documentation
  • Links: What is Prompt Engineering, Prompt Engineering Guidelines
  • Complete guide with examples for multiple models (Claude, Titan, Llama).
• PartyRock - No-code Playground
  • Link: partyrock.aws
  • Experiment with prompts without programming. Perfect for beginners.

🔷 Google Gemini

• Prompt Design Strategies (Complete)
  • Link: ai.google.dev/gemini-api/docs/prompting-strategies
  • Comprehensive guide covering from clear instructions to few-shot prompting.
• Introduction to Prompting (Getting Started)
  • Link: cloud.google.com - Introduction to Prompting
  • Concise and focused, ideal for beginners.

🎯 Recommended Learning Path

If you're a beginner:

1. Claude: Prompt Library (real use cases)
2. ChatGPT: OpenAI Academy (basic concepts)
3. AWS: PartyRock (no-code experimentation)
4. Gemini: Introduction to Prompting (fundamentals)

If you're technical:

1. Claude: Anthropic Cookbook (Python code)
2. ChatGPT: Platform Prompt Engineering guide
3. AWS: Complete Bedrock documentation
4. Gemini: Prompt Design Strategies

✅ Why these resources:

• Official and authorized.
• Updated 2024-2025.
• Free and publicly accessible.
• Practical examples and exercises.