LangChain

Tutorials

A practical LangChain tutorial explains how to build Sherlock for smarter scientific literature searches across Portable Document Format files.

LangChain tutorial indexes scientific Portable Document Format files, retrieves passages by meaning, and cites filenames and pages via embeddings.

Oct 23, 2026

Coding with AI

Quiz on Developing LLM Applications with Python

A diagnostic quiz for Python LLM apps, checking APIs, prompts, LangChain, RAG, embeddings, vector databases, agents, and MCP tool connections.

Oct 22, 2026

Workflows & Automation

Your RAG Demo Seemed Flawless—Until a Real User Arrived.

A four-part LangChain guide shows how to diagnose and fix RAG retrieval failures in chunking, embeddings, query handling, ranking, and data quality.

Oct 22, 2026