Must-Read Free AI Resources
Practical AI resources on Prompt Engineering, Agents, and RAG - Updated (06/2025)
📌 This is a regularly updated list of only top AI resources on Prompt Engineering, Agents, and RAG — curated for software builders and AI users, not academic researchers. I pick practical, accessible papers worth your time. Bookmark it and check back often.
🧠 Prompt & Context Engineering
The Complete Guide to Building Skill for Claude (PDF)
Author: Anthropic
https://resources.anthropic.com/hubfs/The-Complete-Guide-to-Building-Skill-for-Claude.pdf
Prompt Engineering (PDF)
Author: Lee Boonstra
https://www.kaggle.com/whitepaper-prompt-engineeringFoundational Large Language Models & Text Generation (PDF)
Kaggle / Google
https://www.kaggle.com/whitepaper-foundational-llm-and-text-generationPrompting Guide 101 (PDF)
Google – Gemini for Workspace
https://services.google.com/fh/files/misc/gemini_for_workspace_prompt_guide_october_2024_digital_final.pdfMastering: LLM as a Judge
Galileo (2025)
https://galileo.ai/ty/mastering-llm-as-a-judgeThe Context Engineering Guide (PDF)
Weaviate
https://weaviate.io/ebooks/the-context-engineering-guide
🤖 Designing Agents
A Practical Guide to Building Agents (PDF)
OpenAI
https://cdn.openai.com/business-guides-and-resources/a-practical-guide-to-building-agents.pdf
Agents (PDF)
Google – Tools, Extensions, and Datastores
By Julia Wiesinger, Patrick Marlow, and Vladimir Vuskovic
https://www.kaggle.com/whitepaper-agentsIntroduction to Agents (PDF)
Kaggle / Google
https://www.kaggle.com/whitepaper-introduction-to-agentsAgent Companion (PDF)
Kaggle / Google
https://www.kaggle.com/whitepaper-agent-companionGoogle’s Approach for Secure AI Agents (PDF)
Kaggle / Google Research
https://storage.googleapis.com/gweb-research2023-media/pubtools/1018686.pdfFrom Prototype to Production (PDF)
Kaggle / Google
https://www.kaggle.com/whitepaper-prototype-to-productionBuilding Effective Agents
By Erik Schluntz & Barry Zhang (Anthropic)
https://www.anthropic.com/engineering/building-effective-agentsMastering AI Agents (PDF - gated)
Galileo – A comprehensive guide to evaluating AI agents
https://www.galileo.ai/ty/ebook-mastering-agentsSecuring AI Agents and Non-Human Identities in Enterprises
Cerbos (2025)
https://solutions.cerbos.dev/securing-ai-agents-non-human-identities-in-enterprisesGoogle's Approach for Secure AI Agents
Santiago (Sal) Díaz, Christoph Kern, Kara Olive – Google (2025)
https://research.google/pubs/an-introduction-to-googles-approach-for-secure-ai-agentsAgentic AI Patterns and Workflows on AWS (PDF)
Aaron Sempf & Andrew Hooker, Amazon Web Services
July 2025
https://docs.aws.amazon.com/pdfs/prescriptive-guidance/latest/agentic-ai-patterns/agentic-ai-patterns.pdf
🔍 Retrieval-Augmented Generation
Mastering RAG (PDF - gated)
Galileo AI — ~200-page enterprise RAG guide
https://www.galileo.ai/mastering-ragAgentic Architectures for Retrieval-intensive Applications
Weaviate
https://weaviate.io/ebooks/agentic-architecturesWhat is Agentic RAG?
By Erika Cardenas & Leonie Monigatti (Weaviate)
https://weaviate.io/blog/what-is-agentic-rag
🧪 Evaluation
Evaluating Agents X post
Ornella Altunyan (Braintrust)
https://www.braintrust.dev/blog/evaluating-agentsLLM Evaluation Metrics: The Ultimate Guide X post
Confident AI
https://www.confident-ai.com/blog/llm-evaluation-metrics-everything-you-need-for-llm-evaluationAgent Quality (PDF)
Kaggle / Google
https://www.kaggle.com/whitepaper-agent-quality
⚙️ Other Free Resources
Machine Learning Q and AI
Sebastian Raschka – No Starch Press (2024–2025)
https://sebastianraschka.com/books/ml-q-and-ai/AI Value Creators: The AI Handbook for Innovators (PDF)
IBM / O’Reilly
https://www.ibm.com/campaign/ai-value-creatorsAgentic AI in Financial Services
IBMhttps://www.ibm.com/downloads/documents/gb-en/12f5a71117cdc329
Useful breakdown. The observability gap angle especially — that's where the gap between theory and production usually shows up. 👆
More on this: https://credentials.substack.com/p/the-700-billion-buildout-whos-actually